Why is Delaney called Sao hoof in World of Warcraft?

Those with hooves look good, so they are called Sao hooves.

Delaney is a race in the massively multiplayer online role-playing game World of Warcraft. The Burning Legion has chased Delaney for thousands of years. In order to find a safe harbor, the Delaney people visited many worlds and explored most of the known universes, but the Burning Legion never gave up the pursuit of the Delaney people.

At the same time, the mysterious race of Lu Na gave the Delaney people the knowledge and strength of the holy light. Naru explained to Delaney that there are other forces in the universe that dare to fight against the Burning Legion. One day, it will unite them and become an invincible army of light. The Delaney people were deeply moved and vowed to believe in the light and fight for the selfless ideal of being satisfied.

Kiel Jia Dan was angry at Delaney's escape from Argus and ungrateful rejection of Sargeras' proposal. In retaliation for them, Kilgardan led the army of the Burning Legion to pursue the Delaney mercilessly throughout the universe.

Finally, William and his besieged people avoided the pursuit and found refuge in a distant world, which they called Delano. There, the Delaney people developed their new home into an extraordinary society and lived in peace with the local shaman and orc tribes.