#10 Caterpie

Height - 1'-00"                     Weight - 6.0lb                     Type - Worm

It's short feet are tipped with suction pads that enable it to tirelessly climb slopes and walls.

Say that's a good description, too bad it's not worth anything to the game.  You don't have to use this Pokémon to climb walls or anything.  It's still a good catch because it evolves into Metapod at level 8 (I think).