I dont know the original posters really of the images, but i chose Number two because the overal Composition of the photo is Superb.

The focus is spot on. Now if you upped the shutter speed, and captured that tongue in a still shot it would have been PERFECT! (I hope you dont mind critique! Its a great shot!, i just figured that a little artistic comment might be appreciated ) * Or not! in which case, i am sorry but dont take it as anything more than a friendly suggestion! *