Do rats teethe like puppies? Daisy is butting like a puppy. Everything she does consists of biting. Hard. She hurts us, she's chewing furniture, she's making her sister bleed. Nothing is aggressive. It reminds me of when I had puppies. She is biting everything she can. Even my delicate lady areas if she's walking on me. We tell her no and will squeal but it's not making a difference. I will even tap her on the nose a little to let her no it's not ok (nothing hard at all, just a wake up tap) she's only 3 months so I know she's a baby and will probably grow out of it. I've given her chewing to bite instead of our furniture which is working and I know I can get bitter Apple for that. I am more concerned about us. She's really starting to hurt and I know she's not trying to be mean. Any ideas to protect myself? She doesn't draw blood, but it still hurts.