We have a 20 week old boxer male. When I first got him the breeder told me to do the alpha roll so I did it a few times and I noticed he got more aggressive so I stopped. He is a very well behaved dog, food driven and is pretty well trained for the most part. The last week or so my 13 year old would try to pick him up and he growls and snaps at her. He only snaps once in a while it's not every time. I am unsure how to handle this. I have been sitting next to her while she tries to pick him up to tell him easy...I know for myself I can't have a dog in the house that the kids are scared of or an aggressive dog so I want to do anything I can now to fix this. Any suggestions??? Also, the leash walking is another struggle- when we are walking and see another dog, person, squirrel he just pulls and pulls...he doesn't seem to care the collar is choking him. Today I tried to treat him to distract him while these things happen. I don't know if it's the Age but I feel like he is in his terrible 2s....HELP!! this is completely stressing me out.