Aggressive Blue Heeler Mix
I have a Blue Heeler/Australian Cattle mix who is 6 years old. I have another dog, 3 years old, which is a lab mix and they get along fine. He would growl when my other dog gets close to his food or his bone and we tell him no, bad dog. Recently, he ran after a small dog and bit him, a small bite. He never bit a dog like that before! He doesn't like big dogs mostly. We tried to teach him some things and give treats for that. I want him to social with other dogs and stop worry about his food.
What can I do to fix his problems?
He's my baby and I want him to be better and happy!