Short for Maximum Damage, no really, he was named after the kiddo in 'Where the Wild Things Are'. How apt. My lovely dovey counter surfing loud mouthed obnoxious kitty boy who snuck in as older only to find out he was half his age and is getting HUGE. He must be let outside, or he would not be alive, lol. He is furred like a mainecoon and when he gets rained on it does run off and he loves water, I actually hope he is NOT! LOL!