Animals fall from the sky, whether by magical means, a freak weather event, by catapult, or simply due to Rule of Funny. Sometimes imagined by a Literal-Minded person who hears someone using the trope-naming phrase to describe bad weather. Not necessary for Drop the Cow, though as the name implies it's a very popular way of doing it. Unlike It's Raining Men, the animals usually aren't doing this as a means of aerial insertion into combat.
- The Bible: One of the Ten Plagues of Egypt was a rain of frogs.
- Magnolia echoes the biblical scene with a paradoxical rain of frogs at the climax of the film.
- Truth in Television: Rains of fish have been known to happen when they're swept from the water by a tornado.
- Sieges both real and fictional have seen animals thrown by catapult (often rotting ones, both to spread disease and to avoid giving the starving enemy free food).
Hello, Unknown Troper. You'll need to get known to lend a hand here.