If an animal has spent its life working to the benefit of others then it's off limits (horses, pack goats, working dogs, etc). Dig a hole, bury it, put up a small marker or something if you want.
How do pack goats work to benefit people? (honest question)
Also, what are the difference between pack goats and the goats that people eat (cabrito)? (also, honest question)
Pack goats carry stuff so you don't have to. Just google image search "pack goats." They are pretty bad ass.
There are some differences in breeding, like I'm sure pack goats are bred to be strong and have endurance and be well mannered, whereas meat goats probably focus on getting big or getting big quickly or something like that. It's really not about the breeding, to me, it's about the life the animal has lived. If you bred a pack goat but left it in a field all day to get it fat to eat it that's fine. But don't work him his whole life and then when he is no longer useful kill him and eat him. Seems wrong.
