Houdou! They resemble dogs but consume fire.
They're marked as enemies of the Dragon Turtle Tribe, and it likely has something to do with this ability.
Su He didn't know much, but it should have been advanced by the combined efforts of Red Ancestor and Uncle Zhu.
Su He only knew that hunting down the Houdou Clan could be exchanged for treasures from Red Ancestor and Uncle Zhu—those not stored in the Mountain and Sea Mystery Realm Warehouse.
For example, varieties of female turtles so beautiful it's unjust—this was something Su He found out "by chance," but he couldn't let Thai Zu find out, otherwise Red Ancestor and Uncle Zhu would be punished!
The Thai Clan does not allow the gifting of turtles as items.
The Houdou Clan is very mysterious, with their ancestral lands in the Mystery Huang World. But this clan rarely makes an appearance—perhaps they've been beaten by the Dragon Turtles?