aggressive rescued dog
We adopted a 5 month old border collie mix. When we met him at the adoption fare he was as stranger friendly as could be. Two days later a friend stopped by, ne was on leash, I let him meet the friend and he snarled and bit him. He growled at the vet tech during his vet visit and the next day he had the opportunity to meet anew dog and when he got within reach he tried to attack the other dog. With the family he is as sweet as the day we adopted him. All of these examples have been while I had him on leash. Could he be overprotective of me? He has formed a very tight bound with me as I am his main caregiver? If so what would be the cure?