photo by Randy Richardson https://www.flickr.com/photos/46042146@N00
...which does get a bit boring for everyone else; or it can be the worship of various animals as the incarnations of gods, or God, or some other Life Force or Good Thing.
It all seems a bit odd to me, but, hey, if it involves being nice to animals it can't be bad.
Well, as long as it doesn't involve human sacrifice it can't be too bad, anyway.
Mind you, every sort of worship involves some sort of sacrifice, doesn't it?
Thing Not To Indulge In Unthinkingly Today: zoolatry. The Greek word zōion means animal; the Greek word latreia means worship.
The carn bit of incarnation comes rather horribly from the Latin word carō, which means flesh.