Possibly. You should take it to a vet.
if your guinea pig has a tumor it may lose hair and its behaviour may change eg eating habits etc if you suspect a tumor you should properly take it to the vets incase. the guinea pig may also have a lump. some tumors are cancer and i would recommend that you take it to the vets even if you suspect a tumor.
I am afraid is may be a sore, type of cancer, or a tumor. You should bring your guinea pig to the vet as soon as you can!
It is called as malignant tumor.
When a tumor has made a mass or lump it's called a neoplasm
A tumor is a lump that you can feel with your fingers, it is a lump or a swelling that may or may not be tender to the touch. It is possible to get a tumor on pretty much any part of the body. If you suspect that you have a tumor you should see your doctor.
it wqill have a lump on its butt
Fat deposit or a tumor or a boil.
i started showing at around 2 or 3 months i had a little lump its was funny because its the type of lump when someone cannot distinguish whether you just have a chubby tummy or your actually pregnant so when i went to the store or something i felt like everyone was looking at my tummy saying um ew fatty lol!
A tumor, go to the vet.
A carcinoma is a cancerous tumor.
There are many reasons for a hard lump on the septum. It can be cyst, tumor, or other cause. Only a physician can determine the cause.
Take it to a vet.