No, I think you hit the nail on the head. i was trying to think of a way to work that in, but I couldn't work it into the flow of the paragraph. Dogs need to feel physically that they are part of the pack. They need to contribute, and they need firm social/behavioral boundaries in order to feel safe. Toy breeds rarely have those needs fulfilled, and so they act out. While the oblivious owner may remain tolerant of the dog's outrageous behavior, it at risk of being abused by the other people who have to interact with it.