Since you are the one who brought it up, let no one here accuse me of bringing religion into this thread.
The difference between Abrahamic religion and Dharma religions is that in Dharma religions anyone can make anything up and claim it to be part of their religion, while Abrahamic religions don't allow that and have standards.
Some Hindus claim that it is against their religion to kill any animals and look down at people who do kill and eat animals. Yet other Hindus not only think it's okay to kill animals but consider it a part of the religion.
So which one is it? Is it that no animal should be killed and eaten and everyone should be a vegetariani? Or that it's okay to kill and eat animals and subsequently sacrifice them?
Of course this is just one of the schizophrenic aspects of Dharma religions. There has never been any confusion in Abrahamic religions about sacrificing and killing animals, and that is a fact.