Here is a little knowledge on why a hamster might bite us! On one hand, they can bite; Hamsters are very timid and easily frightened animals, and they will bite humans. They don't necessarily like to be held, so if you pick one up unexpectedly, it may bite you. they will also bite if you wake them up from a deep sleep or if your hand smells like food. On the other, you can train them; You can train a hamster to get used to being handled, and then it may not bite you when you pick it up. Begin by getting the hamster used to being touched. Gently stroke the hamster with your finger or a soft object until it no longer shows fear, and then escalate the handling until it allows you to pick it up. Bottom Line; Hamsters will bite humans if they are afraid, and adult hamsters bite hard. Don't handle a new pet until you are sure it is used to being touched, or until you train it to be handled. Pet hamsters that you haven't picked up in awhile may revert to being afraid of you, so you will have to retrain them. I hope this topic will help my brother TheMouse with his pet topic id: 2801651.