Don't know if this was posted here already but there is a Buddhist story about a queen who had sex with a dog... Queen Mallikā.
The story goes that one day Queen Mallikā entered the bathhouse, and having bathed her face, bent over and began to bathe her leg. Now her pet dog entered the bath-house with her, and when he saw her standing there with body thus bent over, he began to misbehave with her and she let him continue. The king looked out of a window on the upper floor of the palace and saw her. On her return he said to her, “Perish, vile woman; why did you do such a thing as that?” “Why, your majesty, what have I done?” “You have behaved most wrongly with a dog.” “It is not true, your majesty.” “I saw you with my own eyes. I will not believe anything you say. Perish, vile woman.” “Great king, it is a remarkable fact that whoever enters that bath-house appears double to whoever looks out of that window.” “You utter falsehood.” “If you will not believe me, enter the bath-house yourself, and I will look out of that window.
The king was such a simpleton as to believe what she said, and entered the bath-house. The queen stood at the window and looked out. Suddenly she cried out to him, “You foolish king, what do you mean by misbehaving with a she-goat?” “Dear wife, I am doing no such thing.” The queen replied, “I saw you with my own eyes; I will not believe you.” When the king heard her reply, he said, “It must be true that whoever enters this bath-house appears double.” Therefore he believed the explanation she gave him.
Mallikā thought to herself, “I have deceived this king, because he is such a simpleton. I have committed a great sin. Moreover I have accused him falsely. The Teacher will come to know of this sin of mine, and likewise the Two Chief Disciples, and the Eighty Chief Elders. Oh, what a grievous sin have I committed!” (According to tradition it was Mallikā who was associated with the king in the presentation to the Teacher of the Gifts beyond Compare. On this occasion gifts valued at fourteen crores of treasure were bestowed upon the Teacher, and the Tathāgata was presented with four priceless gifts; namely, a white parasol, a couch whereon to rest, a stand, and a stool for the feet.) When Mallikā died, forgetful at the moment of death of those mighty gifts, but with full recollection of the evil deed she had committed, she was reborn in the Hell.