My old rat has a red, hard, rough lump on its stomach. What is it?

This could be an abscess, a hernia or a tumor. Unfortunately tumors are common in rats, so if this started small and then grew to this size over time, it is likely a tumor. A tumor in this area is relatively easy to remove if you don't let it get too big, as the surgeon needs enough healthy skin to close the wound again after surgery. A hernia can be easily repaired surgically. You can check whether it is a hernia by gently pressing on the lump and if you can make it disappear into the abdomen, it is a hernia. An abscess will need to be lanced and your rat will need antibiotics. I suggest you schedule an appointment with a veterinarian soon.

Hi there, and thanks for using Petco Pet Education Center, formerly Petcoach! I'm sorry to hear about your lumpy rat friends. Small lumps (less than 1cm) in the skin that have a brown spot or head on them might be sebaceous cysts - a common condition in male rats where a gland in the skin gets clogged and swells with cheesy, white-yellow material. You mentioned that these lumps are soft and under the skin, however, which makes me think of another kind of lump. I don't see that you mentioned their ages, but if they are older rats (over 1.5-2 years old), I do start to worry about mammary tumors (yes, even in males!). These are extremely common in rats as they age, and may be benign or malignant, and may need to be removed, especially if they get large. I strongly suggest that these boys get evaluated by a vet to determine what these lumps are. There is a vet that sees rats near you - here is their info: Acacia Animal Hospital 4205 N Campbell Ave, Tucson, AZ 85719 (520) 308-4225 In the meantime, if you'd like to repost with a picture, feel free to do so. I am also available for consultation if you'd like to discuss your concerns further. Good luck, and I hope that Lenny, Norm, Fred, and Herman stay happy and healthy!

Poor Banshee. It is possible that he could be developing tumors in those area. It could also be his testicles if you don't readily see those on his underside. if to usre unsure and since you feel like they are getting bigger I would strongly recommend to have your vet look at him. Your vet will be able to take X-rays if needed. I hope this helps!

Thanks for reaching out about Yuki and including photos. Soft masses in the axilla or inguinal areas, are often mammary in nature. Most mammary tumors in rats are benign but not all. A veterinary visit is recommended to assess and provide a treatment plan. A second possibility is a fatty tumor (lipoma) which are also benign. Good luck.

I'm sorry Lorenzo has a tumor. Unfortunately, rats in general, especially older rats, have a predisposition to developing tumors both benign and malignant. His prognosis depends on the type of tumor as well as its location. To determine either, he would need to be physically examined by your veterinarian and have diagnostics performed. This could include blood work, x-rays, abdominal ultrasound or a fine needle aspirate of the mass. Once you have this information, you can discuss all options with your vet. Good luck!

Thanks for using Petco Pet Education Center, formerly Petcoach! This may be a benign or malignant growth. This could even be an infection. This cannot be completely assessed just by looking at pictures and usually requires sampling such as fine needle aspiration to determine its origin. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have her evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good day!

Thank you for submitting your question regarding Gilrat. I recommend that he sees a veterinarian. A procedure known as a fine needle aspirate is typically performed when a pet has a mass present. A small needle is used to collect a sample of cells to evaluate under the microscope. This allows the doctor to tell you the type of mass and if treatment is required for him. I hope this information helps!