Calvin and Hobbes by Bill Watterson for February 19, 1994
Hobbes: What's THIS snowman? Calvin: He's a paleontologist. He's looking for cretaceous snow dinosaurs. Hobbes: WHy does he look so sad? Calvin: He realized that snow doesn't fossilize. It just melts. Hobbes: Your snowmen lead tragic lives. Calvin: Well, they're not very bright.