I bet that was very scary and upsetting, I'm glad Buck is ok! Claire's had to get after Tucker a few times but she didn't really bite him, Rebel did but he didn't bite hard and luckily Tucker got the point. They all seem to get along great now but I still watch them and keep Tucker away from them when I know they are aggravated, such as when he keeps trying to jump on them when they aren't in the mood, and he stays apart from them when we leave the house.