A unique feature of Hindu mythology is the key role played by animals, or pashu. The Puranas, ancient Hindu story chronicles, reveal that Brahma, the creator, had a son called Kashyapa, whose many wives gave birth to different types of pashu:* Timi gave birth to animals who swim* Vinata gave birth to animals who fly* Kadru gave birth to animals who crawl* Surabhi gave birth to animals with hooves* Sarama gave birth to animals with paws* Surasa gave birth to animals who defy classification.