Wildlife and urban development don’t usually go well together. Roads in particular fracture the habitats of wide-ranging animals. It restricts their movements and makes it harder for them to find food or a mate. But biologists and urban planners have started working together –- crafting a plan to try to help pumas move more safely around the city. And in the process this one cat, dubbed P-22, has turned into something of a celebrity—the symbol of a movement to redesign our cities and make the built environment more friendly to animals.