Bookend

Bookends are large living books in Super Mario 64 and ''Super Mario 64 DS.

Super Mario 64 / Super Mario 64 DS
Bookends only appear in the course Big Boo's Haunt. Bookends possess sharp teeth and disguise themselves as regular books within a bookshelf. They hop out to attack Mario if he gets close enough. The green books disappear if they hit anything, including Mario. There is 1 room that contains a different type of Bookend. The other type flies quickly from 1 shelf to the other trying to attack Mario. In the DS version both types of Bookends do the same thing to Luigi and Wario.

If Mario jumps above the books, the book will disappear and release a Blue Coin. If Mario is hit by a Bookend, he loses two life points.

Mario Party 8
Bookends also appear in Mario Party 8 in King Boo's Haunted Hideaway. They hover around in the rooms instead of lunging at players.

Trivia

 * Bookends are very similar to Books from Donkey Kong 64.