In our house, it has come to a fight 2 times now between my dogs. First with our new dog and my one girl, and today wit the new one and the other girl. Age difference concerning, the trouble maker is 9 months, the other ones are 2 and 3 years old. In daily life we try to be consistant with the leadership issues, like food , who does what first, etc.. Is it normal for a 9 month old to start to try to climb the ladder in the hiarchy? Should i , and when should i stop a fight? Do you have any tips and tricks for me, perhaps im doing something wrong. Thanks!