People love going to zoos. You get a close-up look at wild animals, might get to watch sea lions jump through a hoop, and just might be cussed out by an unruly gang of parrots. Wait, what? That’s ...

For some of us, the opportunity comes once a year — to try on another look and pretend to be something other than ourselves. But for some species, costumes are an everyday essential, and the stakes ...