Animal Farm

And here's another creature – the Disgruntled Userodont. Disgruntled with life, it wanders through forests and fields, and as soon as it spots a flock of grazing and chirping Floodosaurs in a clearing, it immediately tries to punish them. And it punishes them in a very simple, though unexpected way: it sits on them with its massive… uh, figure. The flock is left in a wet mess, individual survivors scatter in different directions, and it becomes (though not for very long) less disgruntled and sheds crocodile tears.
Heh-heh-heh, Y-ka, y-ka...