Friday, January 18, 2013

Update: Large tumour video and case follow up - hamster's 14-g large tumour


tpvets_logo.jpg (2726 bytes)TOA PAYOH VETS
toapayohvets.com

Date:   18 January, 2013  
 
Focus: Small animals - dogs, cats, hamsters, guinea pigs & rabbits
Electro-excision of a large tumour in a dwarf hamster 
Dr Sing Kong Yuen, BVMS (Glasgow), MRCVS
Date:   18 January, 2013  
toapayohvets.com 
Be Kind To Pets
Veterinary Education
Project 2010-0129

Yesterday, Jan 16, 2013, two older women from "Street 12" came with a 64-g female dwarf hamster aged 1 year and 6 months. She had a gigantic tumour near her left hip. "She's biting the lump", one woman said to me. There was a scab of 2 mm x 2 mm due to the hamster's bite.

ANAESTHESIA & SURGERY
Dr Daniel is convinced that electro-surgery is useful and efficient as he used electro-excision to incise the skin (see video 
http://www.youtube.com/watch?v=J6d03LrHZS8). He excised the tumour which had some abscesses. I weighed the hamster after surgery. She was 50 kg. A heavy weight had been taken out. It was a high risk anaesthesia as the hamster was quite plump and the tumour was massive. However the hamster was still eating.

3 drops of Zoletil 50 was insufficient. "Don't use a large volume of normal saline to top up the syringe," I said to Dr Daniel. "The back muscles of the dwarf hamster is very little. It will be like the doctor injecting 20 ml of liquid into you back muscles. I usually top up the 3 drops of Zoletil up to 0.05 ml in the 1-ml syringe with normal saline before injecting the back muscles of the hamster (see video
http://www.youtube.com/watch?v=J6d03LrHZS8).

I had to use the mask to gas the hamster with isoflurane gas a few times as the Zoletil 50 was insufficient in this plump hamster. Possibly 4 drops would be more effective in a 64-gram hamster or it could be too much and causes death. Much depends on the vet's judgment and experience. The tumour was 14 g in weight!

This is where the risks of death increase because it is not possible to monitor the hamster's breathing and heart rate (ECG, blood pressure monitoring are not practical in a dwarf hamster).

Any overdose of the isoflurane gas meant instant death. No such thing as resuscitation. So, I monitored the anaesthesia top up while Dr Daniel operated. It was touch and go. I had to make sure that the hamster was just below the surgical anaesthesia stage and so you would see some leg movement during stitching. It is NOT possible to achieve the ideal surgical anaesthetic stage as in the dog and cat.

The dwarf hamster is so small. "Surgery must be speedy," I said to Dr Daniel. "Undermine the skin, isolate the tumour, clamp the base with a curved forceps, excise the lump and stitch the skin with 6/0 interrupted sutures. All these to be done in less than 3 minutes."  The slower the vet operated, the more the anaesthesia had to be given and this is where the hamster "dies" on the operating table.  

CHECKING THE ACCURACY OF OWNER'S ADDRESS
The had written "Street 12" in the address. I asked whether she had left out "Bishan Street 12"? Vets must check the records of addresses. She said "Pasir Ris Street 12". I asked an intern to do this case study. She did a video and the link is:    

http://www.youtube.com/watch?v=J6d03LrHZS8. There is a problem with the  absence of sounds, using Windows movie maker. There appears to be no solution from the interns.

  CONCLUSION
The hamster took some time to wake up. Two female interns were present. One of them was a single child. She spent much time with this hamster. "Look, she is vomiting the seeds," this lady intern said to me as she observed the surgery and did some video filming of the operation. "The hamster is dislodging the food from her cheek pouch as she is stressed by the surgery and anaesthesia," I told her. "This is a common occurrence. She is not vomiting." Her parents allowed her to keep one cat. Yesterday I told the parents whom I knew from 20 years ago that this daughter  should adopt more stray cats in her apartment. The mother wanted to kill me. "Don't you dare to suggest this," the mother said to me.

Many Singapore parents dote on the single child and will tolerate them bringing home stray dogs and cats or buy a puppy. In the end, it is the parents who have to care fore them. Yet yesterday, I met a mother, an old client, from Bukit Panjang. Her 15-year-old Maltese X bought by her daughter long ago is so precious to the mother.

The dog came in as she behaved aggressively when carried. The mother knew it was due to false pregnancy. Lots of white milk were present in the dog's swollen mammary glands. This dog still had estrus bleeding 2-3 months ago. At the age of 15 years which is equivalent to 105 years in a human being . This is in contrast to menopause in women at the age of 50 - 60 years. I asked permission for my intern to take pictures for her case study and she said OK.

"Don't feed her," I said to the single child as the hamster after surgery, wanted to store the seeds. The plump hamster laid on her back and sipped water from the water bottle while lying on her back, making her laugh.

The owner came in the afternoon to take the hamster home. The vet must deliver a hamster alive at the surgery. The anaesthesia is the killing part and this is where a vet's reputation is smeared if the hamster dies on the operating table. No deaths should occur if the anaesthesia is minimal and the surgery speedy, but this cannot be guaranteed.


FOLLOW-UP 24 HOURS LATER

 

1250. Follow up on plump dwarf hamster 64kg with large tumour

 
Jan 17, 2013

I phoned the Pasir Ris lady at 11.45 am and reached her on her home phone to ensure she does the proper post-op nursing and medication. Sometimes, vets are too busy and will not phone if the mobile phone does not answer.

"She is eating and drinking water and active," the Indian lady said. "She is more active than before (surgery). I didn't know she has stopped exercising. I pushed the 1-ml syringe too much and spilled the medicine..."

"It's OK as the hamster just needs 2 drops/day for the next 3 days and the syringe has more than sufficient."

"Can I shampoo her?" she asked. "I do it every week. She was not happy at first but now she looks forward to the water bath as the weather is too hot nowadays."

"No bathing for the next 14 days," I said. The instructions are:

1. Use a facial cotton piece, add clean warm water and clean the surgical wound 2x/day for the next 14 days.
2. Stitches will dissolve on their own in 21-30 days. No need to come for stitches being taken out.
3.  No wood shavings as bedding.
4. No exercise wheel.
5. Give medication
6. No bathing for 14 days

A video on the surgery to excise this gigantic tumour by Dr Daniel Sing was produced by the interns:  http://www.youtube.com/watch?v=J6d03LrHZS8. I was the assistant and you can see me doing the IM injection.  There is a problem with the absence of sounds, using Windows movie maker. There appears to be no solution from the interns. Readers with solutions, please e-mail to me.
More info at: Dogs or Cats
To make an appointment:
e-mail judy@toapayohvets.com
tel: +65 9668-6469, 6254-3326
tpvets_logo.jpg (2726 bytes)Toa Payoh Vets
Clinical Research

Thursday, January 17, 2013

False pregnancy in a very old Maltese - 15 years old



1250. Follow up on plump dwarf hamster 64kg with large tumour

Jan 17, 2013
I phoned the Pasir Ris lady at 11.45 am and reached her on her home phone to ensure she does the proper post-op nursing and medication. Sometimes, vets are too busy and will not phone if the mobile phone does not answer.

"She is eating and drinking water and active," the Indian lady said. "She is more active than before (surgery). I didn't know she has stopped exercising. I pushed the 1-ml syringe too much and spilled the medicine..."

"It's OK as the hamster just needs 2 drops/day for the next 3 days and the syringe has more than sufficient."

"Can I shampoo her?" she asked. "I do it every week. She was not happy at first but now she looks forward to the water bath as the weather is too hot nowadays."

"No bathing for the next 14 days," I said. The other instructions are:

1. Use a facial cotton piece, add clean warm water and clean the surgical wound 2x/day for the next 14 days.
2. Stitches will dissolve on their own in 21-30 days. No need to come for stitches being taken out.
3.  No wood shavings as bedding.
4. No exercise wheel.
5. Give medication
6. No bathing for 14 days

1249. Follow up on 3-year-old cat with recurring FLUTD

Jan 17, 2013

No news is good news. The lady owner didn't phone me. I phoned her at 10.47am to find out about her cat as part of my research on FLUTD treatment. It is best practice to follow up in any case, but many vets don't do it.

I tried to phone the Tampines girl whose male Miniature Schnauzer, born in 2004, had spikey bladder stones removed in August 17, 2007 by her young vet operating together with me. This case study was written by me as she was a veterinary clinic helper and her vet was a younger vet doing his first bladder stone surgery with me.

Her mobile phone seemed "dead". No answer and then a dying sound. I phoned her home and hIer mum said the dog is OK, took my mobile phone for her to call me. I asked her vet to call me. No response. The dog did not have recurrence of bladder stones despite being fed dry food! 



CASE OF THE RECURRING FLUTD CAT
"Totally normal," she said happily. "He was fully recovered yesterday, around 6 days after the problem." The cat was so aggressive when she brought him for treatment on Jan 11, 2013. This time, she was prompt in seeking treatment and so the urine did not look red as at 22 months earlier when FLUTD first manifested. "Continue feeding the C/D + water and no other food," I replied. So far so good.

Follow up provides the vet with feedback on the efficacy of his management and treatment. I sent the cat back home with in-dwelling cathether on the same day.  The cat ripped off the catheter the next day although he had an e-collar. The case is written in a blog a few days ago.




The X-rays do not show radio-dense struvites. Negative crystals in the urine doNOT mean that there are no struvites inside the bladder. In any case, with medication and irrigation of the bladder under sedation, the cat recovered fully 6 days after treatment and the lady owner is most happy. This time, she was prompt in seeking treatment and there was no need for fluid therapy and hospitalisation as occurred 22 months ago.

Many Singapore pet owners delay seeking treatment of difficulty in urination of their dogs or cats and the outcome may not be so favourable as much inflammation and damage to the bladder had been done owing to the delay in seeking prompt vet treatment.   




1248. Two interns: Electro-excision tumours in 2 dwarf hamsters

TOA PAYOH VETS
toapayohvets.com

Date:   17 January, 2013  
 

Focus: Small animals - dogs, cats, hamsters, guinea pigs & rabbits
Electro-excision of a large ear wart or tumour in 2 hamsters 
Dr Sing Kong Yuen, BVMS (Glasgow), MRCVS
Date:   17 January, 2013  
toapayohvets.com 
Be Kind To Pets
Veterinary Education
Project 2010-0129
CASE 1. Ear wart or tumour

Nowadays, Singapore's pet owners are much more sophisticated and educated. I got an e-mail (below) with 4 images of the hamster's ear wart or tumour from the young couple in a yellow car.
 

...i@gmail.com>
12/9/12
 
to judy
 
Dear Sir/Mdm,

I have just discovered a tiny growth on the ear of my hamster. Attached are the pictures for your reference.

I would like to know if there is any treatment for my hamster and the cost of it.

If so, pls advise on an appointment date and time. Thank you.

Regards,
Name of owner

 
Kong Yuen Sing <99pups gmail.com="gmail.com">
12/9/12
 
 
 
I am Dr Sing from Toa Payoh Vets. Thank you for your email. The "tiny" ear tumour needs to be removed by surgery and under anaesthesia. The ear canals need to be examined for other growths.

The approximate cost is $150-$200 for consultation, anaesthesia, surgery (+/- stitching) and medication. Appointment is by phone 6254-3326.

Bring hamster at 9.30 am and it goes home by 4 pm usually. Best wishes.  

 
Sent from my iPhone
Although it is troublesome to set up the electro-surgery equipment just to excise a "small" ear wart, I am in favour of using electro-excision as the cutting needle is much more precise in cutting the skin. It takes time to sell my idea to Dr Daniel as he said it would be easier to snip off the wart with a scalpel. We did electro-excision and he is quite convinced it is a useful method as bleeding is minimal.

In retrospect, I would have used the circular electrode needle to go under the ear wart and slice it away. The straight needle electrode was used in this case but both achieved the same results in taking out the "small" ear tumour.

   
Image from hamster owner in the e-mail   Remove distracting objects (right) to avoid wasting time on cropping the image   Cropping required to take out the distracting object
   
The rule of thirds for better image. The hamster's eyes or body should be at the intersection of 1/3 of 3 horizontal and vertical lines to produce interesting images for the viewer
     
Straight needle electrode used. I should have recommended a  circular one to loop off the tumour   Very little bleeding and more precise cut when electricity has been use to cut off the ear tumour

CASE 2. A DWARF HAMSTER WITH A GIGANTIC TUMOUR NEAR THE LEFT HIP

Yesterday, Jan 16, 2013, two older women from "Street 12" came with a 64-g female dwarf hamster aged 1 year and 6 months. She had a gigantic tumour near her left hip. "She's biting the lump", one woman said to me. There was a scab of 2 mm x 2 mm due to the hamster's bite.

ANAESTHESIA & SURGERY
Dr Daniel seems convinced that electro-surgery is useful and efficient as he  used electro-excision of the skin. He excised the tumour which had some abscesses. I weighed the hamster after surgery. She was 50 kg. A heavy weight had been taken out. It was a high risk anaesthesia as the hamster was quite plump and the tumour was massive. However the hamster was still eating.

3 drops of Zoletil 50 was insufficient. "Don't use a large volume of normal saline to top up the syringe," I said to Dr Daniel. "The back muscles of the dwarf hamster is very little. It will be like the doctor injecting 20 ml of liquid into you back muscles. I usually top up the 3 drops of Zoletil up to 0.05 ml in the 1-ml syringe with normal saline before injecting the back muscles of the hamster (see video).

I had to use the mask to gas the hamster with isoflurane gas as the Zoletil 50 was insufficient in this plump hamster. Possibly 4 drops would be more effective in a 64-gram hamster or it could be too much and causes death. Much depends on the vet's judgment and experience.

This is where the risks of death increase because it is not possible to monitor the hamster's breathing and heart rate (ECG etc not practical in a dwarf hamster).

Any overdose of the isoflurane gas meant instant death. No such thing as resuscitation. So, I monitored the anaesthesia top up while Dr Daniel operated. It was touch and go. I had to make sure that the hamster was just below the surgical anaesthesia stage and so you would see some leg movement during stitching. It is NOT possible to achieve the ideal surgical anaesthetic stage as in the dog and cat.

The dwarf hamster is so small. "Surgery must be speedy," I said to Dr Daniel. "Undermine the skin, isolate the tumour, clamp the base with a curved forceps, excise the lump and stitch the skin with 6/0 interrupted sutures. All these to be done in less than 3 minutes."  The slower the vet operated, the more the anaesthesia had to be given and this is where the hamster "dies" on the operating table.  

CHECKING THE ACCURACY OF OWNER'S ADDRESS.
The had written "Street 12" in the address. I asked whether she had left out "Bishan Street 12"? Vets must check the records of addresses. She said "Pasir Ris Street 12". I asked an intern to do this case study. She did a video and case report.    

CONCLUSION
The hamster took some time to wake up. Two female interns were present. One of them was a single child. She spent much time with this hamster. "Look, she is vomiting the seeds," this lady intern said to me as she observed the surgery and did some video filming of the operation. "The hamster is dislodging the food from her cheek pouch as she is stressed by the surgery and anaesthesia," I told her. "This is a common occurrence. She is not vomiting." Her parents allowed her to keep one cat. Yesterday I told the parents whom I knew from 20 years ago that this daughter  should adopt more stray cats in her apartment. The mother wanted to kill me. "Don't you dare to suggest this," the mother said to me.

Many Singapore parents dote on the single child and will tolerate them bringing home stray dogs and cats or buy a puppy. In the end, it is the parents who have to care fore them. Yet yesterday, I met an aged mother, an old client, slim woman with white hairs at the side, from Bukit Panjang. Her 15-year-old Maltese X bought by her daughter long ago is so precious to the mother. The dog came in as she behaved aggressively when carried. The mother knew it was due to false pregnancy. Lots of white milk were present in the dog's swollen mammary glands. This dog still had estrus bleeding 2-3 months ago. At the age of 15 years which is equivalent to 105 years in a human being . This is in contrast to menopause in women at the age of 50 - 60 years. I asked permission for my intern to take pictures for her case study and she said OK. My intern would have written the case in 2013Vets blog.  

"Don't feed her," I said to the single child as the hamster wanted to store the seeds. The plump hamster laid on her back and sipped water from the water bottle while lying on her back. The owner came in the afternoon to take the hamster home. The vet must deliver a hamster alive at the surgery. The anaesthesia is the killing part and this is where a vet's reputation is smeared if the hamster dies on the operating table. No deaths should occur if the anaesthesia is minimal and the surgery speedy, but this cannot be guaranteed.

EDUCATION VIDEO ON ELECTRO-SURGERY IN THE HAMSTER
I can't link this webpage to the video taken by the intern as the video is in another blog called 2013Vets. See www.toapayohvets.com for the link to 2013Vets and get the video.   

Name of webpage:
http://www.kongyuensing.com/folder7/
201301117electro_surgery_hamster_toapayohvets.htm
 
More info at: Dogs or Cats
To make an appointment:
e-mail judy@toapayohvets.com
tel: +65 9668-6469, 6254-3326
tpvets_logo.jpg (2726 bytes)Toa Payoh Vets
Clinical Research

Copyright © Asiahomes
All rights reserved. Revised: January 17, 2013

Toa Payoh Vets

1247. Miccroscope to show images on laptop screen to client

The instructio​ns for the microscope
Inbox
x

These instructions are important for the vet. It is good to show the images to clients but the vet sometimes don't bother as it is too troublesome..  
Connect the microscope using the USB cable to the USB port
Start
Programs
ScopeTek
ScopePhoto
Acquire
Live Capture
ScopeTek DCM310

---------------------------------------------
 
To take a photo:
Top left corner, click 'capture a frame' and another window box will appear. Click the red X on the new window and a pop up saying 'image has been modified. Need save?' Click yes.

To view one of the shots previously taken, click file on the top left hand. Click open image and then choose which image you want.

1246. Animal activism. An abandoned animal shelter

Straits Times Jan 11, 2013 report: 31 dogs rescued from 'abandoned' animal shelter.

In Singapore, the government had designated some land in Pasir Ris as spaces for dogs. Entrepreneurs bidded for the land and build the kennels or tanks to house the approved species of animals like dogs, cats and fishes. They developed the land and rent out the kennels to private individuals, some of whom operated animal shelters.

However rentals are very high compared to other countries with lots of land. Hence some animal activists find that they can't sustain their operations as they board more homeless dogs. After some years if they don't have financial donations if they could not manage their operations. This would be probably what happened when volunteers at Madam Yap's Shelter in Pasir Ris had not seen its operator for many week and 31 dogs were 'abandoned'.

In animal shelters, the dogs needed to be vaccinated against the serious viral diseases of distemper and parvoviruses. They needed heartworm disease and tick prevention. However, it is extremely difficult to do all these preventive disease program if the shelter has insufficient funds.

A few days ago, I met an animal activist who rented Pasir Ris kennels for $8,000 per month. She had given up this shelter and relocated the dogs or rehomed them.She said Pasir Ris kennels would be taken back by the government in 2014.

Madam Yap's shelter is reported to cost $4,000 a month to operate. This included rent, utilities and a full-time worker but not food and treatment for the sick dogs. Save Our Street Dogs has taken over the place. Their email is sostreetdog@gmail.com 

There is another shelter called Madam Wong's shelter which is still operational, according to my intern who visited Pasir Ris last Sunday, being driven there by her father who doted on her. I had asked her to write an essay on "Animal Activism in Singapore".

 



Wednesday, January 16, 2013

1245. Recurring FLUTD in a cat



tpvets_logo.jpg (2726 bytes)TOA PAYOH VETS
toapayohvets.com

Date:   16 January, 2013  
 
Focus: Small animals - dogs, cats, hamsters, guinea pigs & rabbits
REVIEW
A CASE OF A RECURRING FLUTD IN A CAT

Dr Sing Kong Yuen, BVMS (Glasgow), MRCVS
Date:   16 January, 2013  
toapayohvets.com 
Be Kind To Pets
Veterinary Education
Project 2010-0129

Jan 15, 2013
Recurring FLUTD (Feline Lower Urinary Tract Disease) can be very distressful to the cat and the owner. In one sad case, a couple’s cat with recurring FLUTD of more than 2 times died at a veterinary practice and the wife was very sad. This case was recorded reported in:
http://www.sinpets.com/F6/20120218FLUTD-cat-death-toa-payoh-vets_Singapore_ToaPayohVets.htm

The cat becomes more aggressive as he knows what the vet is going to inject and catherise him again and again. This was what happened to this 3-year-old, male, neutered cat. The brown-striped cat hissed at me as the lady owner placed him on the consultation table.

His spinal hairs rolled upwards making a ridge. However, Dr Daniel appeared not to distress him as he spoke to him while the lady owner kept a close watch. Then he held the cat by the scruff of the neck while I injected his back muscles with xylazine and ketamine to sedate him for a proper examination without stressing him more. The cat was catherised and urine was collected. He was X-rayed as Dr Daniel wanted to eliminate the presence of bladder stones. 

FOLLOW UP

I phoned the young lady owner today at 11 am to remind her that the cat’s diet must be strictly canned C/D for the next 4 weeks to prevent recurrence of blood in the urine and difficulty in urination.

DIET & URINATION
“What did you feed him before his urination problems?” I asked the young lady who returned my phone call.
“Dry cat food. Sometimes canned food mixed with dry food once a week.”
“Do you feed cat treats?”
“Yes, he loves them. I give him alternate days. Some reddish pellets. I can’t remember the name.”
“Does he drink water?” I asked.
“He seldom drinks. He will run away when I try to give him water.”

URINE ANALYSIS & X-RAYS

Date April 7, 2011
(22 months ago)
Jan 11, 2013
URINE ANALYSIS
Urine colour Red, turbid Yellow, turbid
Urine pH 8.0 8.0
Urine SG 1.021 1.026
Urine Protein + + +
Blood in urine 4+ 4+
White blood cells in urine 50 30
Red blood cells in urine >2250 1359
Bacteria in urine Occasional Occasional
Crystals in urine* Nil Nil
X-RAYS
X-rays Not done No radio dense stones
Outcome Treated by an associate vet of my Surgery. Given 2 cans of C/D. No complaint for the next 22 months Recovered as at Jan 15, 2013. Fed canned C/D for next 4 weeks and review. No treats or dry food strongly advised by me.

CONCLUSION
* No crystals in the urine does not mean there are no Struvites or other bladder stones inside the bladder. The cat was sent home on the same day after catherisation and irrigation of the bladder. The cat tore out the urinary catheter at home on the second day. On the 3rd day morning, the owner phoned me saying the cat had difficulty peeing. In the evening, the cat was normal and there was no blood in the urine. Owner compliance with the vet's instructions on medication and prescription diet is invariably poor and so the FLUTD recurs in many cases. 

Is this case of FLUTD a case of interstitial cystitis (painful bladder) similar in human beings since there is apparently "no struvite stones" inside the bladder? The presenting sign was the cat having difficulty in urination but no urethral abstraction.

Will hydro-distension of the bladder, DMSO and other drugs supplied into the bladder resolve the problem of recurrent FLUTD? Nobody knows as the causes of FLUTD in a cat are numerous.
ADVICES
1. Owner adds 2 tablespoons of water into the C/D food. Cat does eat C/D but will not drink water given by the owner. “When he was sick in Jan 11, 2013, he drank a lot of water,” the lady said. “But now he turns his mouth away when I give him water!”

2. Continue C/D canned food for at least one month. Water added to the canned food.

3. No dry food and no cat treats anymore.

Webpage:
http://www.kongyuensing.com/folder5/
20130116Recurring_FLUTD_cat_3years_toapayohvets.htm
 
More info of interesting case studies at: Dogs or Cats
To make an appointment:
e-mail judy@toapayohvets.com
tel: +65 9668-6469, 6254-3326
tpvets_logo.jpg (2726 bytes)Toa Payoh Vets
Clinical Research


Sunday, January 13, 2013

1243. Mum's favourite dog died at the Surgery.

The "7-year-old" Silkie had difficulty breathing for the past 4 weeks. X-rays showed an enlarged heart. Two years ago, I had recorded harsh lung sounds on the right side of the lungs. Dental scaling and extraction of several loose teeth were just done in March 2012.

The dog wanted to bite me 4 days ago when she was put back into her carrier and the mum took her home after a day's stay in the Surgery for treatment of the lung condition. 1 day ago, the dog could not breathe normally again and was treated. For some unknown reason, the mum decided that the dog would be hospitalised. The dog was quiet and did not attempt to bite me when I checked at 8 pm. The next morning, the dog had passed away.

"I should have taken her home," the mum repeated. "He died of fright as he had never been away from hom at all."

"I did not expect him to pass away," I usually sent the dog home if I think the dog is very ill. "She died of heart failure as you can see the tongue is purplish."

This dog was mum's favourite, one son told me. "He would bite any one who goes near the mum. He is more than 7 years old as my brother got him back as an adult dog."
"Was she having difficulty breathing in the past months?"
"Yes," the girlfriend said. "She would be breathless when walked a short time."  

The dog's teeth were dark yellow and most were gone. So, this dog could be older than 7 years.