Ovarian Cysts in Guinea Pigs: What Owners Should Know

Ovarian cysts are very common in female guinea pigs, particularly as they get older. They may occur on one or both ovaries and can sometimes exist without obvious symptoms. 🐹 Signs to watch for Possible symptoms include: * Hair loss on both sides/flanks that is usually not itchy * Enlarged or crusty nipples * Swollen abdomen or a pear-shaped appearance * Decreased appetite or weight changes * Lethargy or low energy * Hunched posture or signs of abdominal discomfort * Changes in behavior, including aggression or mounting * A palpable abdominal mass Importantly, guinea pigs often hide illness, so subtle changes in eating, weight, or behavior deserve attention. 🔎 How are cysts diagnosed? A veterinarian—ideally one experienced with exotic pets—may perform an abdominal examination followed by imaging. Ultrasound is particularly useful because it can visualize the ovaries and distinguish cystic structures from other abdominal problems. X-rays may also be helpful. 💊 How are ovarian cysts treated? Treatment depends on the cysts, symptoms, the condition of the uterus, and the guinea pig’s overall health. Surgery is generally the definitive treatment. Depending on the findings, a veterinarian may recommend removal of the ovaries alone (ovariectomy) or removal of the ovaries and uterus (ovariohysterectomy/spay). Concurrent uterine disease is relatively common, which is one reason vets may recommend removing the uterus as well. In selected cases where surgery isn’t appropriate, other approaches may be considered, but these may not eliminate the underlying cystic ovarian disease and can require additional treatment. 🚨 When is it an emergency? Seek veterinary care promptly if your guinea pig: * Stops eating or produces very few/no droppings * Becomes extremely lethargic * Has significant abdominal swelling * Shows obvious pain or repeatedly hunches * Has difficulty breathing * Develops sudden weakness or collapse A guinea pig that stops eating can develop serious gastrointestinal problems quickly, so don’t wait several days to see whether the problem resolves. ❤️ What owners can do Regularly monitor your guinea pig’s weight, appetite, droppings, abdomen, coat, and behavior. If you notice symmetrical hair loss or abdominal enlargement—especially in an older female—ask your veterinarian about ovarian cysts and whether an ultrasound is appropriate. Bottom line: Ovarian cysts are common, but they’re not something owners should simply ignore. Early veterinary evaluation can identify cysts and any associated uterine disease before the guinea pig becomes seriously ill.

Written by a veterinary technician, not a licensed veterinarian, and without examining your pet. It is general information to help you decide what to do next: not a diagnosis, a treatment plan, or a prescription, and not intended to establish a veterinarian-client-patient relationship. Do not start, stop, or change any medication based on it. Your own veterinarian has examined your pet and knows their history, so ask them before acting on anything here. PawsRx has not checked this credential against a state register.