George used to HAVE a cat (I foolishly thought he was MY cat) and still he'll stand out there and go "CAT! CAT! CAT! CAT!" until we go out and forcibly drag him back into the house or the cat gets bored and leaves. We have a whole bunch of cats in this neighborhood and they like to hang out in our yard so of course this is a daily occurence. LOL Sometimes he'll get so excited he bounces with each bark. Boing. Boing.