“Fact”:  Elephants are the only animals that can’t jump.

Truth:  First, I’m going to assume that there was a typo here and they meant to say mammals, since fish, snakes, eels, brine shrimp, etc., can’t jump. But even among mammals, I’ve never heard of a whale being able to jump. When their weight crushes them to death just by lying on dry land, I doubt anybody has see one jumping about. How about a guinea pig? They can barely hop with the limited joints in their back legs. Hippos?