There are more Black Buck Antelope in Texas than there are in their original homeland, maybe it's Pakistan. We have a herd of Black Bucks on our ranch and they are multiplying like rabbits.
When the only few remaining elephants, rhinos, tiger, lions, etc. will be the ones confined to zoos, poachers will find a way to get at them too.
“..There are probably plenty of them living in zoos in the US....”
...and when they are gone from the wild, the price will go up and zoos won’t be safe.
even elephants will multiply fast if given enough food supply, range and left alone...