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Guinea Pig Ovarian Cysts: Hair Loss on the Sides in Sows
Symmetrical hair loss on a female guinea pig's flanks can be a sign of ovarian cysts. Learn the symptoms, risks and treatment options.
A common problem in older sows
Ovarian cysts are common in unspayed female guinea pigs, particularly from around two or three years old. Many cysts cause no early signs, which is why routine vet checks matter.
Signs to look for
- Hair loss on both sides of the body, usually symmetrical and not itchy.
- A swollen or pear-shaped belly.
- Crusty nipples or behavior changes such as mounting.
- Reduced appetite or discomfort when picked up.
How vets diagnose and treat cysts
Vets usually confirm cysts with ultrasound. Treatment options depend on the pig and may include spaying or hormone treatment. Your vet will discuss risks and benefits for your individual pig.
How to track changes
Take photos of the sides of the body monthly and record weight weekly. A gradual change is much easier to spot in photos than from memory.
When to call an exotic vet
This guide is general education, not veterinary advice. If your guinea pig stops eating, stops producing droppings, struggles to breathe, bleeds, or seems suddenly quiet, contact an exotic vet the same day. Guinea pigs hide illness, so small changes matter.