Xuan Wu's stomach turned into one of these animals. Nuwa cut the legs off of one of these named Ao and used those legs to prop up the sky. Apollo transformed into first this animal, and then a snake, 
Xuan Wu's stomach turned into one of these animals. Nuwa cut the legs off of one of these named Ao and used those legs to prop up the sky. Apollo transformed into first this animal, and then a snake, in order to rape Dryope. A nymph who did not attend Zeus and Hera's wedding, Chelone, was turned into this animal. An object derived from one was used by Heracles to kill Linus. One of these animals ensured that Mount Mandara did not fall into the milk ocean, and another killed travelers who stooped to wash the feet of Sciron and got pushed off of a cliff. Vishnu's second avatar, Kurma, is one of these animals. Hermes killed an ox and one of these on the day he was born, so as to fashion a lyre. For 10 points, name this animal, which in many Native American myths holds the earth on its back.