Problem is, the little yappy 'dogs' are incapable of understanding. They are literally brain-damaged (the structures in the brain that are responsible for analyzing social cues are missing outright), and incapable of learning to read social cues. But it's always the big dog that gets blamed for their injuries. On a human, they can (eventually) learn. Usually over the course of a dozen or so ass-beatings that leave them in the hospital, caused by their alligator-sized mouth writing checks that their hummingbird-sized ass cannot cover. A yappy 'dog' gets into one fight and it's dead (or so injured it needs to be put down). And then their brainless owners demand that the dog who fought their "innocent little Fluffy" be put down because it's the violent one.