I love all cookies!!!! (except deadly ones >.<)
Krista, did you take it too the vet I feel so bad. I love hamsters so I care about it. I have to boy hamsters and they're plump and healthy.
Do you have to feed your hamsters dry food? And can you feed your hamster barley or rice? (dry)
If your hamster keeps biting its teeth might be very itchy to it because its teeth keep growing. So try giving it a stick so it could chew on.