Hello, I am new to the board and also relatively new to owning a dog. Sorry if stories like this get posted often but I feel that I need some advice on keeping my dog (and dogs around him) safe and happy.
I have been trying to deal with aggressive behavior from my dog Isaiah. He is 4 years old and a border collie mix (not sure what he is mixed with but it could be lab). My girlfriend and I adopted him from a rescue and love him very much. Aggression towards other dogs is his only major problem. We live in a major city (San Francisco) and it is difficult to find places for him to run without other dogs around. Here are a couple of short examples of when this has happened:
--Most recently, a baby pitbull jumped up towards his head while he was bringing the ball back during a game of fetch (he LOVES fetch). Isaiah stood very still and leaned away before barking loudly and biting the baby pit in the cheek. He would have kept attacking it if I had not tackled him away. The baby pit sustained a cut on the cheek (it bled but not badly) which I offered to pay to have mended, but the owner did not take it to the vet.
--When another dog tries to restrict his running, Isaiah does not like this at all. He has gotten into fights when dogs cut him off or jump on him. Unfortunately, he is so fast and low to the ground that I feel like he is really attractive to dogs that want to wrestle. Isaiah hates wrestlers.
--If another dog is near him at feeding time, he will try to fight the other dog. This has happened in a kitchen and also when treats were being given. However, at a park he is not treat or food oriented. He just wants to run and usually chase other dogs playing fetch.
There have been other times when I have had to break up loud barking arguments which seem like they are about to be fights. Usually it starts with another dog entering his space. Isaiah just doesn't really get along with other dogs although his favorite pastime is holding his ball in his mouth while he runs circles around another dog playing fetch. He can do this for hours and his focus is really intense to the point where it can hard to get him back on leash when he starts. He's great with people and a wonderful companion in every way, other than the aggressive behavior.
Any suggestions or advice on how to work around this would be great. Thanks for reading.