I don't think Nebo dislikes dogs by breed, but by size, gender, and/or dominance. He doesn't like large (especially male) dogs (especially unneutered!!) trying to dominate him. If the dog is more submissive and playful, he's fine, but if it tries to be dominant towards him he won't tolerate it. If it's a really small dog, he seems to be fine if they are dominate towards him, even being snotty and biting at him, but if it's a big dog, no way.

Reggie generally doesn't like dogs, he growls at all of them, he goes after Nebo all the time but luckily Nebo just ignores him...plus Reggie is older and had most of his teeth pulled, so he's not really a threat...

Sydney is fine with any dog until they start chasing her then she gets defensive.