hamster tumors are just the same as a humans. When you start to feel small or large bumps on a hamster you will know that its a sign and you should immediately take your hamster to the vet, and they will see what they can do, or if your hamster is in pain, they can put your hamster to sleep humanely.
A tumor on a hamster can appear as a visible lump or swelling on the body. The tumor may vary in size and shape, and it can be either firm or soft to the touch. A vet should examine any abnormal growth on a hamster to determine if it is a tumor and assess appropriate treatment options.
Take it to the hospital if i were you. If you did that than hope he/she lives. Sorry bout your hamster
it wqill have a lump on its butt
I would not attemp to remove the tumor myself (one of my hamsters had a tumor) but to take it to a vet to have it surgically removed if they think necessary.
you should ask your local vet about that...
It may be the male hamsters testies or if it is female it may be a tumor.
Get a licensed vet to take a look at it.
Now before i answer your question, is the hamster engulfed it the tumor and is it benign?
It is possible that your hamster has a tumor of some sort.
it could be both you should take it to see a vet
Yes, it would be a good idea to monitor your other hamster closely for any signs of illness or changes in behavior. Tumors can sometimes be genetic or caused by environmental factors, so it's important to keep an eye on your remaining hamster's health. If you notice any concerning symptoms, it would be best to consult with a veterinarian.
The bump could be a cancerous tumor. If the bumps get larger, develop black scabs, and your hamster starts to poop blood this theory may be more or less correct. I am truly sorry about your hamster.