McCoy: "It's a human trait to love little animals, especially if they're attractive in some way." Spock: "Doctor, I am well aware of human traits, I am frequently inundated by them, but I've trained myself to put up with just about anything." McCoy: "Spock, I don't know much about these things, but I do know one thing. I like them... better than I like you!" Spock: "Doctor, they do indeed have one redeeming quality." McCoy: "What's that?" Spock: "They do not talk too much."
(Casper the Tribble impersonator on Bonanza Peak 12/05/07)