The Ass in the Tiger Skin

A washerman covered his donkey with a tiger skin and let it graze in other people's fields at night. The farmers saw the shape and ran away in fear.

The donkey enjoyed the rich crops and grew fat. But one night he heard another donkey braying from far away.

Forgetting the disguise, he brayed loudly in answer. The farmers recognised him at once. A borrowed appearance cannot hide one's nature for long.