Watch: Ben Affleck vs. Jimmy Fallon for a pile of super-puppies

The rules of "Pup Quiz" are simple: Two players -- in this case, Batman v Superman star Ben Affleck and The Tonight Show host Jimmy Fallon -- are asked trivia "based on animal things." If the player answers correctly, he's receives a cute golden retriever puppy; if he responds incorrectly, the puppy goes to his opponent. We said "simple," not "logical."

To commemorate the opening of Dawn of Justice, the puppies in Thursday's game were made even more adorable by costumes that transformed them into furry little Superman, Batman, Wonder Woman, The Flash, Batgirl and Supergirl. (Awwwwww.)

However, the timely superhero theme didn't give Affleck a paw up on Fallon; he whiffed on the first question, about the name of Batman's canine crime-fighting partner. "The stings," he sheepishly acknowledged. "That was in my wheelhouse."

The questions only got more difficult from there, with the stakes rising in the "Double Puppardy" and "Final Puppardy" rounds. In the end, though, Batman emerged triumphant.

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