Tortoise decided he would be king, and told his wife to cook a feast for the day. She cooked it and brought it to him. He carried the food to an ant-heap beside the road and sat down to eat, without first giving the ant-heap its share. Every time he took a handful, the ant-heap bit him on the rump. When the food was gone he tried to stand, and could not. He shouted that he was a king, like his father before him.
Elephant came out of the bush and asked what he was doing. “Becoming a king,” said Tortoise, “and you cannot lift me.” Elephant tried and failed. Leopard came, boasted of the goats and cattle he killed in the bush, and failed too. Tortoise told each of them that he had put down roots in the land of his fathers.
Then Bush Rat came, tried, and could not lift him either. So he began to dig into the ant-heap to find what was holding Tortoise, and saw his tail. He bit it, and Tortoise came free. That is how Tortoise came to have a short tail.
An abridged retelling of a traditional story.
Northcote W. Thomas, "Anthropological Report on the Ibo-speaking Peoples of Nigeria," Part III: Proverbs, Narratives, Vocabularies and Grammar (London: Harrison, 1913), Awka dialect narratives, pp. 70-72; recorded by Thomas as Government Anthropologist; text in the public domain (Internet Archive). Abridged from the English rendering in this historical collection, not independently translated from Igbo. Read the source