No reason they couldn't. You should take your hamster to a certified rodent proctologist and have it checked.
Hamsters have hemorrhoids, I'm not sure if all of them. BUT, hamsters do get colds, they are one of the few pets you can transmit the flu/colds.
Anybody can.
there is a big difference between them as syrian hamsters are bigger than dwarf hamsters. There is quite a lot of different types of dwarf hamsters such as, Russian winter whites, Chinese, campbells,...
on a scale a hamster usually have up to 4 or 5 babies
Yes, she will have baby hamsters, but only if she mates with a male hamster.