They may be protective because they both think it is their territory. They may also be fighting over a girl hamster.
No, Syrian Hamsters can be male or female.
12
No, much like dogs and cats, hamsters can mate with different types of hamsters.
I would say 50 50
There is no set number. It varies with the hamster.
if your hamsters are two boys and you got them from the same pet store in the the same cage then it would be ok but that's probably the only time it would be. if it was a boy and a girl it would be ok to but then you would have baby hamsters.
yes boy hamsters are more aggressive then girls
boy boys boys boys
Two same-sex hamsters tend to get along well with each other, regardless of gender. However, it's usually recommended to keep hamsters of the same sex together to prevent unwanted breeding and potential aggression. So, two boy hamsters or two girl hamsters can make good companions, but make sure they have enough space and resources in their habitat.
Because they are boys and they have different parts from girls
It should be warm if you want your hamster to have more baby girls, it should cool to have more baby boys.
No, it's the other way around, males are usually stocky and bigger than females.