Here's a great little video that pretty much explores the food chain. A young boy was fishing with his siblings and his mom when the kid caught a tiny perch. the fish was really much to small to keep, but to a nearby garter snake, the fish looked to be just the right size.

The kid is lucky, partly because someone thought to shoot the video and he's lucky that it was just a garter snake. Once when I was fishing in a small pond I caught a perch that was actually big enough to keep and I would have kept it, except for the fact that a water moccasin seemed to want it too and I was about to get in a fight over it.

This kid not only got his fish back, but got a viral video out of the whole thing.