I'm not sure about the USA but here in Canada there are legal restrictions on game. In Ontario, you can't sell meat from game. (You can't even give it away, t

I'm not sure about the USA but here in Canada there are legal restrictions on game. In Ontario, you can't sell meat from game. (You can't even give it away, technically, unless it was inspected and butchered by a licensed butcher.) So any venison in the store will have come from farm-raised deer. And deer are relatively difficult and expensive compared to chickens or cattle. I can find mutton and venison, and also horse meat, in upscale grocery stores here in Ontario. It's all terribly expensive, except lamb/mutton from NZ when it's in season.