Originally Posted by Portia Elizabeth

It could well be that he hasn't fully matured, he's very, very puppy-like both in looks and personality, even though he is 3 years old. It's just confusing behaviour, and once he barks at them, the other dog always seems to leave, so it never gives me a chance to see what would happen beyond that. It also makes me wonder like you said, if he's challenging or trying to intimidate the other dog, as they do always seem to run away from him.

It's a shame really, i'd love for him to be able to really get along with other dogs, because we would like another but obviously can't bring another one into the home if ours won't let it happen, it'd be unfair on both dogs.