English KS1/KS2: Aesop's Fables - 39. The Ant and the Dove
An ant is dying of thirst, due to all the water in the forest having been dried up in hot weather. The only source of water is the river, so the ant decides to drink from that, despite knowing how dangerous it is. Sure enough, the river sweeps him away, and he cries desperately for help.
A dove helps the ant to safety by helping him climb on to a leaf, and disappears before the ant can thank her. However, the ant is able to return the favour when two hunters come with the aim of catching the dove. He bites the feet of the hunters, preventing them from catching the doves and causing them to run away.