You know, a thought occurred, Skitzo probably does take a liking to this little dog. My guess is every time Skitzo kills him, he has the powers to resurrect him back from the afterlife, an endless torment cycle of death and revival. He could just move on to the next victim, but no, that dog is special to him, because that little dog still sees some friendly demeanor in him and never gave up on that belief, no matter how many times he kills and revives him, and he finds that amusing to him.