Speaking of reintroducing species- It’s too bad we can’t convince America (who I doubt we can convince to get off meat entirely in the foreseeable future) to switch from cattle to bison. Not only would it put the fauna we replaced back where it’s supposed to be, I just think it tastes better. You can usually only get it at local places for a premium, but back when I ate meat, it was definitely worth going out of my way for a buffalo burger.
It can’t be that difficult to farm them, because I drive by a pretty sizable (but still clearly owned by one family) bison ranch on the way to my mother’s house on a fairly regular basis and they seem to be doing fine on the same pasture I see the cows grazing on nearby. If anything, there are more bison per square footage than cows and the bison don’t seem to be suffering. Considering they used to be in herds so huge that indigenous Americans would regularly stampede them off of cliffs for their meat and have plenty left to do it again, I’m guessing they can be farmed in greater density.