Cat

— http://xpshort.com/thRJEOQ
You're about to discover exactly how to train your cat so it does exactly what you want, when you want (such as come when called, never scratch the furniture or bite, use the human toilet or litter box perfectly, eat what you give it, and be more affectionate!
You'll have a much closer, happier relationship with your cat, even if you already get on really well!