There's, yawn, hypnosis, sing, grasswhistle, and sleep powder.
In attack moves there's Dark Void and Lovely Kiss(learned by Darkrai and Jynx respectively.)
-Sing. Fluffy, cute pokémon get it like Jigglypuff and Lapras. :) -Sleep Spore Bug pokémon get it.
Spore!!! the move is spore
hypnosis
the move hypnosis
use sing :P
spore
sing that's it
Sing Sleep Powder Rest Yawn Leaf Whistle
grass whistle
There isn't one.
sleeping powder
The move Dark Void puts its opponents to sleep however in a double battle it'll put both of its opponents to sleep.