Neanderthaler cracking bones to eat

The flying saucer beamed down a cow for the hungry caveman

Although cows are oft shown as a target of UFO abductions, it was the other way around. Cows where a gift to man from ancient aliens. ~Mat

A UFO planted a cow in a barren land next to a neanderthal who looks really confused to see it.

As the hieroglyphs predicted, the cow opened a black hole to destroy all farm animals besides cows, but the black hole got out of hand