At least cats only scratch where as dogs actually kill, there have been sooooo many cases of dogs killing children and adults. I perfer cats, cause the worse thing they can do is ruin your funiture and scratch you. I can't stand dog smell and drool, especially when they get wet. my neibhores in apartment above mine had a dog and it had fleas. it would howel at any siren no matter what time a night it was. And when it had to scratch out the fleas you would hear this thump thump sound in the middle of the night... I perfer lizzards...