Just think of all the animals you ever heard about
Like rhinocerouses tigers cats and mink
There are lots of funny animals in all the world
But have you ever seen a mastodon that's pink?
Think!  A mastodon that's positively pink?

The opening drumroll of Mastodon's album Blood Mountain has been niggling since I first heard it.  Now I'm convinced I know why: the Texan math-rockers lifted it wholesale from the opening to the Pink Panther cartoons.  I call Easter egg!