Aggressive JRT

Over the past week my 5 year old Jack Russell Wishbone has begun growling at my wife and I. In the past two months his dog companion, a black lab cross left home with my stepson. In addition my dog has had to remain inside frequently due to extremely cold temperatures outdoors in the past few weeks. He has not been neutered and full moons seem to affect him as well. He begins growling as if he were going to bite. He exhibits this behavior when he is in his crate and on our bed primarily. I love this dog but I am afraid he is going to bite. What could this be caused by? What can be done about it? How would you discipline him for this behavior?

• Re: Aggressive JRT Jan 30 (0)