Aerith assumes he means in terms of creatures, and purses her lips as she thinks. "Hm...well, there's Nanaki's race. I forget what they're called at the moment, but they're like big felines, very intelligent and long-lived compared to humans. There are all kinds of different creatures out beyond the cities. Ice spirits, frogs that can turn people into frogs..." Her least favorite thing about Zack's hometown, to be honest. "But for creatures people live with, mostly just dogs and cats? Oh! And there are chocobos~ Really, really big birds," she says, holding a hand above her head to given an idea of just how tall they are. "They're big enough to carry people, and they're cute besides. But mostly you'll just run into humans." The way she says that is a clear acknowledgment that their world probably seems more boring than one with humans and robots and animal scientists all mixed together.