Cat anal glands: symptoms, blocked sacs, and treatment

Learn how to spot problems with your cat’s anal glands, what blocked anal sacs mean, and how to treat and prevent them.

Overview

Cats have two anal glands (or sacs) just inside their bottom, which produce a dark, smelly, oily liquid every time a poo is passed. The liquid is expressed onto the poo, and its strong scent helps to mark your cat's territory. These sacs are smaller than the size of a pea. They usually function normally, but problems can develop, and treatment may be necessary for anal gland blockages, infections and abscesses.

So, what are the common anal gland problems, and how do you spot the signs?

Common problems with cat anal glands

Signs of blocked anal glands in cats

Treating anal sac disorders in cats

Treatment of anal gland impaction

Treatment of anal gland abscesses

Treatment of anal gland tumours

How to prevent anal gland problems in cats

Need more advice on anal gland problems in cats?

Medically reviewed by Lizzie Youens, BSc(Hons) BVSc MRCVS

Published on 19/07/2018 • Reviewed on 14/06/2025