A cyst is a sac or cavity that may be filled with pus, semi-solid material, or air. It doesn’t usually cause pain until it gets large. An abscess is a painful, red infection that’s filled with pus. A ...

Explore causes, treatments, and prevention strategies for dog cysts. Reviewed by Jennifer Coates Tumors, growths, and cysts are common in dogs, particularly in older ones, and should be promptly ...