it might be a long poop that happens sometimes
She's menstruating.
It may be the male hamsters testies or if it is female it may be a tumor.
usually a boy hamster will get something that looks like a very large butt which is their testicles. Female hamsters will not get this. Usually boy hamsters from the store do not have this at first because their so young but after time progresses they will start to get this
It's probably poop that won't come out.
poop
none
Out of his butt.
Yes. Out their butt.
It could be something from the inside of her body so you should take it to the vet
yes not sure what it is called but it means your hamster it going to die
There will be a string hanging from its butt.
a butt hess is the spot before the crack which people usually say is hanging out