SYMPTOM

Mammary gland enlargement

Owners may observe mammary gland enlargement in their pet, which can present in various ways depending on the underlying cause.

Why timing matters

Early observation

Later presentation

Conditions commonly associated

Pseudopregnancy (False Pregnancy)

Hormonal changes stimulate mammary tissue development in preparation for nursing that will not occur.

When to explore further

Last reviewed: 24 April 2026 · Dr Alastair Greenway MRCVS