A very important topic that many find difficult to speak of. I favor composting myself. There is much useful information at Recompose
It is currently legal in Washington, Colorado, and Oregon and very close is a few others. I know that New York is considering legislation. I have buried an alpaca and my canine companion of 14 years, Barley, on my farm, but they were not composted first and I understand that composting is much more thorough than a green burial.