Black dog syndrome

Affects: Cats, Dogs

Overview

Black dog syndrome or big black dog syndrome is a phenomenon in which black dogs are passed over for adoption in favor of lighter-colored animals. Black cats are similarly reported to be subject to the same phenomenon.

While earlier studies found evidence for a lower adoption rate for black dogs, other studies found that they are adopted more quickly than dogs with lighter coat colors. This has led some experts to dismiss black dog syndrome as a 'myth'.

Educational information only. This page is general guidance and is not a substitute for professional veterinary advice. Never give medicines or change treatment without consulting a veterinarian. If your pet is unwell, contact OC Pets or seek emergency care.
Sources (reused under open licences, with thanks): Wikipedia — “Black dog syndrome” (CC BY-SA 4.0) · Compiled by OC Pets Veterinary Clinic, updated 15-06-2026.