Hinduism does not regard Jesus as an Avatar. Some sects like Yogananda org may be saying so in order to pull Christian converts among Hindus (most of these are converted through money power) towards them and may be they may get them back to Hindu fold eventually.
A general approval for bestiality (actually beastiality it is) should never be given, no woman should allow an animal to mount her as it is insult to humanity. But a man having sex with a female dog or a female horse may be permitted as long as the animal is not subjected to force as these two...