Even the weakest may find means to avenge a wrong

An Eagle was chasing a hare, which was running for dear life and
was at her wits' end to know where to turn for help. Presently
she espied a Beetle, and begged it to aid her. So when the Eagle
came up the Beetle warned her not to touch the hare, which was
under its protection. But the Eagle never noticed the Beetle
because it was so small, seized the hare and ate her up. The
Beetle never forgot this, and used to keep an eye on the Eagle's
nest, and whenever the Eagle laid an egg it climbed up and
rolled it out of the nest and broke it.

At last the Eagle got so worried over the loss of her eggs that she
went up to Jupiter, who is the special protector of Eagles, and
begged him to give her a safe place to nest in; so he let her lay
her eggs in his lap. But the Beetle noticed this and made a ball of
dirt the size of an Eagle's egg, and flew up and deposited it in
Jupiter's lap. When Jupiter saw the dirt, he stood up to shake it
out of his robe, and, forgetting about the eggs, he shook them
out too, and they were broken just as before.

Ever since then, they say, Eagles never lay their eggs at the
season when Beetles are about.