"Can a veterinarian tell how many lives a cat has left?" is a valid question (if you're an idiot) and thankfully the internet is here to reply in kind.

And luckily for us, we don't have to go into the depths of despair that is Yahoo! Answers to get our answer, because Jimmy Fallon and Seth MacFarlane are here to tell us the answers to all life's most pressing questions.

Who knew MacFarlane could tinkle those ivories so well?

Via YouTube