DH's dog. Just to paint a picture of him: He's three years old, he has a lot of hound in him and teeth like Jaws. He was the big one of the litter and likes all other dogs to submit. Once he flattened a neighbour's puppy, it sounded nasty but was over very quickly with no harm done and now they are best buddies and he is very patient with it. He loves chasing cats/squirrels/rabbits etc which is doubtless what he was bred for, but thankfully no disasters so far, but I do worry about what would happen if he did catch a cat. But at home he is a softie, insecure when DH isn't around, & he's always been fine with people.
Anyway, we have just moved house and I go out with him, hoping to meet new friends with dogs. Yesterday he attacked a beautiful puppy - I'd picked him up, it was a female (he's usually OK with girls) and he seemed fine but when I put him down he went for it. The woman was understandably irate. Doubtless if I'd let it continue the pup would've submitted, which was all he wants, but this isn't nice for owners. Today he went apeshit at another dog - the lady was initially friendly but quickly hurried away when he started snarling. So that's another potential friendship buggered.
We had a dog behaviour lady look at him and she said his behaviour is normal. Said not to have him castrated as that would make him feel under threat & therefore worse. Basically he needs to be top dog, and the hound in him means he won't be told what to do.
Any ideas?
Please be kind - he's not mine and it's not my fault he isn't trained!