The bury/ not bury is an interesting topic. Yes all farmed animals should be collected by a knackerman and disposed of properly. But if you had that animal for 10, 15, 20, even 30 years in the case of some horses- who would say that the animal wasn't a member of your family?
I have a friend who kept a long letter writing debate ongoing with the Scottish animal health section regarding her horse (who was perfectly healthy at the time but was 28 years old). Her point was that she and her sister had owned that animal since they were children, it was a part of their family, and after all you would not expect a member of your family to be collected by a knackerman and thrown onto a truck. They did eventually admit to her (in writing) that if a case like that went to court, where she did bury a 30year old horse, it would be highly unlikely that she would be convicted of anything or even fined. Because what jury in the world would think you had done something wrong by burying a much loved family member on your own property, in a responsible way(ie away from water courses etc).