So i have a siberian husky, I was not smart and didn't really socialize him with many dogs when he was a puppy (he is now 3 years old) and i decided to take him to the dog park with my other 2 dogs for the second time today. he seems to be showing some aggression towards big, dominant dogs. he growls at them. he doesn't seem to have many problems with calm, submissive dogs but the dominant ones are causing a problem. how can i fix this so he can be off leash and play with the other dogs?