Kids pull their hair and what ever else they can get their hands on. My dogs are terrified of my 7 month old. Part of it is that they know they can't bite or get rough with the little one or they're dealing with me. That kinda puts them in a bad situation. They don't really bite but a little nip is to much for a small one. Also once the crawling begins the dogs have a hard time finding a good place not to get attacked. LOL. When the kids are old enough all gloves are off, dogs can rough'em if they get fucked with.