RE: what to do if i get an antelope?
Wyoming G&F requires you to first, fill out and attach yout tag to animal. Best is on horns or as I do, through a slit cut in lower leg. You don't have to "register". As mentioned, get it skinned, washed down, and chilled A.S.A.P. for maximum eating enjoyment.
The hair on an Antelope will pull off very easy, so don't drag it to the truck or one side will be bald. If you have a game cart, bring it. Or carry it!
Good luck!