As we all know, walk-through aviaries have been popular fixtures in zoos for decades now, and the last few years have witnessed a dramatic rise in the number of walk-through exhibits for other animals too, particularly lemurs, squirrel monkeys, callitrichids, fruit bats, sloths, wallabies, and butterflies, and occasionally penguins. I believe at least one UK zoo has a walk-through Meerkat enclosure. At Trentham Monkey Forest in Staffordshire, one can walk amongst free-roaming Barbary Macaques, something I would never have believed possible until a few years ago. But what other species, never previously considered, could theoretically make promising candidates for a walk-through exhibit if anyone had the initiative and courage to try it. How about Brazilian Tapirs? And are they any carnivores, besides Meerkats, that visitors could possibly walk amongst? How about small members of the Felidae? At the risk of getting shot down in flames, I reckon walk-through exhibits might even be possible for Cheetahs and wolves. What other species could be considered by a bold and unorthodox zoo-director?