The dog in cat clothing

This is Dawson. He appears to be a cat but he behaves like a dog. He does have a very endearing quality, or habit; he uses the litter box for, um, big stuff, but he pees in the toilet. I have not figured out how to teach him to flush. He has been known to stalk pitbulls, deer, and birds (he no longer has daytime outdoor privledges) but runs from the peahen.