I suppose this is as good a time as any to explain that I'm using a wide definition of "Dog" to also include coyotes, wolves, foxes, and even werewolves!
Original Appearances: Road Runner Cartoons
Other Appearances: A handful of Bugs Bunny cartoons, various comic books, specifically “Beep! Beep! The Road Runner” (see Miscellaneous), several toys and video games.
Biography: Not much is known about Wile. E.'s past. He may have been born with the fanatical fascination for eating Road Runners, or it may have developed over time. Presumably, he began his affiliation with the Acme Company/Corporation at an early age. One might suggest that Acme uses him as a guinea pig for their new gadgets.
Powers: Incredibly durable, able to take an amazing amount of damage and be back to normal in the next scene (a standard cartoon character ability). Also the ability to pull out a sign from behind his back that says exactly what he would say if he could speak (see Miscellaneous).
Group Affiliation: None
Miscellaneous: Wile E. never speaks in the Road Runner cartoons, but in the few Bugs Bunny cartoons he appears, in, he speaks quite eloquently. In the Gold Key/Whitman “Beep! Beep! The Road Runner” comic books, Wile E. talks quite a bit (but then again, so do the Road Runners); he also tends to build his own gadgets for capturing the Road Runners. It's best to think of this comic book as taking place in a parallel universe. Wile E. Coyote is a completely different character from Ralph Wolf, despite their looking exactly the same save for nose color.
This Week in Geek (2-08/12/13)
54 minutes ago