Yes, hamsters will naturally scratch themselves.
yes it is normal
pretty much
No they will fight.
well i have a hamster and it only produced 2 pups so it's normal.
a syrian dwarf hamester is smaller and a normal syrian hamster is beigger.
Yes, they will have normal babies.
no
one your hamster is a boy & two it is normal.
they exersize so that they dont get fat and die earler than normal
I have a hamster its fine he might get sick though
panda hamsters are black and white and normal hamsters are brown and white.
Apart from the fact that you're not supposed to disturb your hamster when it's sleeping or eating, normally a hamster would bite if you did that. It might be that your hamster is simply not aggressive at all, or on the other hand it could be that it's too weak to defend itself because it's ill. It would be best to take the hamster to the vet's just in case to see there's nothing wrong with it.