Resource guarding and dog agression - WTD?
I have a 5 year old mix (Bad Dog or BD) that was neutered when I got him at 2 years of age. He came from a home with three other dogs so it never crossed my mind that he would be aggressive with other dogs.
So far he has shown resource guarding which I could probably prevent 95% of the time, but he also went after another dog in the dog park (the first sign of trouble I saw) and my other dog (OD) in the yard. I couldn't in either case make out the trigger to his behaviour.
I booked a one on one session with a nearby trainer with a good reputation. I assumed I'd be going to private sessions and working intensively with her, but she doesn't think that is necessary. Of course, during our session BD was nothing but train-able and well behaved even with food and another dog nearby. She feels that I simply need to assert my dominance more often with him and this behaviour will disappear. She doesn't feel I need to remove all toys/triggers to the resource guarding. I'm not sure...
I've been working on his obedience and it has seemed to help. Until last night when I stupidly left the garbage out and something happened. I could hear the dogs fighting, then OD whimpering, and they were apart by the time I got to the room. To be fair to OD, should I be cage muzzling or crating BD when I am not home?
Dog trainer's next obedience classes begin in Sept and I will attend those but I feel I am not doing enough to keep OD safe.
Any and all advice welcome - please! I'm already removing BD when food or treats are around and I've picked up all dog toys. The trainer didn't think this was necessary but I do. His reaction can be so swift and surprising that I feel OD is at risk if I don't. Also working on his basic obedience to get him more responsive.