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There is a sutta where two ascetics, one who act like an ox and one who acts like a dog ask the Buddha what their rebirths will be. The Buddha tells him he'll either go to hell, or be reborn an animal.
A second time…And a third time Puṇṇa, the ox-duty ascetic, said to the Blessed One: “Venerable sir, this Seniya is a naked dog-duty ascetic who does what is hard to do: he eats his food when it is thrown to the ground. He has long taken up and practised that dog-duty. What will be his destination? What will be his future course?”
“Well, Puṇṇa, since I certainly cannot persuade you when I say: ‘Enough, Puṇṇa, let that be. Do not ask me that,’ I shall therefore answer you.
“Here, Puṇṇa, someone develops the dog-duty fully and uninterruptedly; he develops the dog-habit fully and uninterruptedly; he develops the dog-mind fully and uninterruptedly; he develops dog-behaviour fully and uninterruptedly. Having done so, on the dissolution of the body, after death, he reappears in the company of dogs. But if he has such a view as this: ‘By this virtue or observance or asceticism or holy life I shall become a great god or some lesser god,’ that is wrong view in his case. Now there are two destinations for one with wrong view, I say: hell or the animal realm. So, Puṇṇa, if his dog-duty succeeds, it will lead him to the company of dogs; if it fails, it will lead him to hell.”