Hello everyone! My boyfriend and I recently got a male Russian dwarf hamster. At the petsmart where we bought him, he seemed nervous when we touched him but did not bit at all. However after a couple of days when I was changing his water and food he would nip me a bit. I figured it was because I was invading his space. But now I'm sure he is used to his new surroundings but he is still biting. He no longer nibbles, he bites hard. I tried giving him treats in my hand and letting him come to me but he would take the food and leave. Is it because he's still getting used to his new environment? Sometimes we feel that his (wired) cage is too small for him. I've read some topics here and there and most people seem to really like aquariums better. Any advice to help stop my hamster's biting problem? Thanks!