Ok there's something I can answer, mostly it depends on the dog, Rex being raised with 6 other dogs till he was 4 months old does have a few resource guarding issue, he likes other dogs but he's more of a dominate personality than bob, bob on the other hand could care less about where he is in the pack, he just doesn't care that much, bob ignores little yippy dogs (it doesn't matter what breed it is, if it's a small yippy dog he literally ignores it, doesn't even look at it) and so far there has only been one dog he did not like, that was a big male lab.