I have a 6mnth old bluepit he has always been such a sweet dog and the past week its like a switch was turned and he's being aggressive to my female yorkie who he sleeps w every night usually, going to the park he tries to jump at bikes, scooters, etc. And he is already trying to mate which is where most of the aggression seems to stem from. Idk what to do to get this under control now any advice???