There is more than one artist with this name:
(1) Animal is Aaron Nemec, a musician and visual artist based in West Lafayette, Indiana. He releases his lo-fi, indie pop albums on his own record label Executive Bird and provides most of them for free download at his website www.executivebird.com. He changed his name from Animal to Drum Kit in the winter/spring of 2006.
(1b) Animal is also and currently still the drummer from Muppet show.
He's also the artist under the name, (incl. release catalog) for longest. Read more on Last.fm