3086. An 11-year-old Miniature Schnauzer vomits for 2 days

11 years old, male neutered.
A beloved jogging companion vomited greenish black stuff 2 x
"Did he eat grass?" I asked as dogs do eat grass.
"Yes," the master said.

Blood test
kidney failure

X-ray
Left kidney enlarged 3X - tumour or hydronephrosis?
kidney (left and right) and bladder stones

ultrasound?
biopsy of left kidney?