by Debra V.
I have a 6 year old terrier (male, nurtured) who is becoming more and more aggressive. If I am alone in a room reading and Ollie is in the room with me and my husband walks in he growls abs snaps at him. At first I took this as he was protecting me but he is getting worse.
If anyone comes to the front door he does the growling and it is a very aggressive growl!!!!!
I’ve told him no over and over when this happens but it’s not working. I need some help.