Urgent
Blood in Stool in Dogs and Cats
Bright red blood usually points to the lower bowel; black tarry stool to the upper GI tract and is often more serious.
Large amounts, black stool, or combined lethargy — urgent care.
Blood in Stool in Dogs and Cats
Bright red blood usually points to the lower bowel; black tarry stool to the upper GI tract and is often more serious.
- •Colitis, parasites
- •Parvovirus (especially in puppies)
- •Foreign body
- •Ulcers, tumours
Possible causes
- •Colitis, parasites
- •Parvovirus (especially in puppies)
- •Foreign body
- •Ulcers, tumours
- •Anal gland issues
What to do at home
- Save a stool sample
- Note frequency and volume
- Do not give painkillers or antidiarrhoeals
When to call the vet
- →Large amounts of blood
- →Black tarry stool (melena)
- →Lethargy, vomiting, refusal to eat
- →In puppies — any blood needs evaluation
FAQ
Can a food change cause this?
Sudden food changes can irritate the gut but should not cause significant blood. Best to see a vet.