Saw the scene with Rainbow Dash and this came straight to mind.

Looney Tunes et al (c) Warner Bros
My Little Pony: Friendhsip is Magic (c) Hasbro
My inability to type an actual copyright mark (c) nobody at all

DISCLAIMER: I lay no legal / ownership claim to this whatsoever. If you want to grab it and use it for the end of one of your own videos, I've got no problems with that so long as you mention who spent 20 minutes slapping it together for you. :]