Betty, I think that they are, or at least were, technically consoidered to be related to goats and not to antelope. DNA testing has changed quite a bit in the wonderful world of taxonomy & morphology. I don't know where they stand now.

I think that Field & Stream had a little thing on what our game is, zoologically speaking. I believe they said our Elk aren't Elk, they're Wapiti (their own thing). Our Moose were technically Elk. I think our Bighorn Sheep were technically Goats and our Mountain Goats weren't Goats. Of course that was a long time ago and it might have been an April (Fools) issue...

Ed

P.S. The did NOT classify Swamp Witches. Of course, their offices were on Madison Avenue so their exposure would have been slight-to-non-existant.