I have two 3 month old Bulldog puppies. The crate and consistency are the best advise I can give. Gertie was soooo bad about nipping when we first got her, but she's much better now. She learned "No" pretty quickly. I have a crate for each of my girls and their bed and toys are inside, so they don't mind being in them. Whenever they're getting too wild, they have "naptime" in their crates. They also come in very handy when I can't be watching them closely. Do you provide your puppy with plenty of rawhides/nylabones/chewie toys to keep him from chewing on furniture and your daughter? I've found that very helpful. Gertie and Ida know what is theirs' and what's a no-no.