SCIENCE!
Roadrunner
also, the Collared Lizard runs on two legs like a raptor or a Trex
(this is a clip from BBC's Weird Nature Marvelous Motions)

Praying Mantis eats the head of her mate during sex    • Praying Mantis eats the head of her m...  
They Bounce! (Lemur and Bush Baby)    • They Bounce! (Lemur and Bush Baby)  
Roadrunner 26 mph    • Roadrunner 26 mph  
Prehistoric animal size comparisons    • Video  
Bad Monkey!    • bad monkey!  
Gliding Frogs    • Gliding Frogs  
Mantis Shrimp Deadly Knockout Punch    • Mantis Shrimp  Deadly Knockout Punch