Why is my female pet mouse's vaginal area swollen? Is she sick?

Thank you for your question. If this bump is only on one side of the abdomen I would be concerned about a tumor or an abscess (pocket of infection). With a pregnancy we would expect a symmetrical swelling of the belly. I would recommend your friend take the mouse to a vet who sees pocket pets for an examination to better determine the cause of the enlargement.

Thank you for using Petco Pet Education Center, formerly Petcoach! That particular type of mouse does not have a cheek pouch - the only mice that do have cheek pouches are deer mice (these are brown, and have a little bit more hair on the tail). This swelling can be a mass, or swelling of the lymph nodes or salivary glands which are located in that region. This can be due to a viral infection, which is very contagious. I recommend separating the mice with swellings from the mice without them as soon as possible to avoid spread of any infectious agents. The sick mice should be seen by a vet, who can prescribe antibiotic medications and supportive treatments depending on the cause. If this is caused by a virus, the affected mice may shed the virus for the rest of their lives and require life-long care and separation. I hope this helps!

Thanks for reaching out about Peanut and including photos. If she has dead fetuses in the uterus, there is nothing you can do at home and a veterinary visit is needed ASAP. Try to encourage her to accept food and water via a syringe. Provide a quiet and warm environment, separated from other mice. Good luck.

I would recommend having Peachy examined by a vet. Mice can develop tumors just like humans, and with the small size of their body, it can be some obviously large very quickly. A vet will do an exam and determine if this is the case. If it is, they can discuss treatment options and help you watch out for signs of decreasing quality of life.

Thank you for using Petco Pet Education Center, formerly Petcoach! It is difficult to say what Mouse's mass can be without seeing a photo. However, a small orange sized mass on a dog Mouse's size is considerably large and warrants a veterinary exam. The lump can be an enlarged lymph node, a mass, or a hernia. I recommend having Mouse seen by a vet as soon as possible - the mass may need to be removed, or a small sample taken to determine the exact cause. I hope this helps and that all is well with Mouse!

It sounds like this could be a prolapse. I suggest you get her to a vet for an exam. If you want to post again with some photos we may be able to help you better. The photo you tried to post did not show up.

A lump on the neck could be an enlarged lymph node, abscess or gland (thyroid). If your pet is weak, a veterinary visit ASAP is recommended. Small animals typically do not have much stored energy reserves, and by the time they appear sick, they have been ill for a period of time. Some of these conditions might respond well to treatments (infection) versus neoplasia, which can be treated but with difficulty.