Zebra often hang out with various other species and serve as the lookouts for the bunch. Hard enough to slip up on a group of anything, but when Zebras are present stalking is even more difficult.
Notice most of the zebras have busted us but most of the eland have not......
It is quite difficult to approach any of the exotics, as most are herd animals, usually 4 or more to the group+ there are so many other species, including native wildlife, almost invariably something alerts the target before you get within shooting distance, but it sure is fun trying!