ROYAL OAK, Mich. Its not often you hear of an animal being adopted by another animal, but thats exactly what has happened at the Detroit Zoo with a baby chimpanzee born back in January. The carefully planned process began with observing potential surrogate moms in the Detroit Zoos 11-member chimpanzee troop and their responses to Zane. Baby Zane at Detroit Zoo. The chimpanzees who live at the Detroit Zoo have a fission-fusion dynamic, which means they have the freedom to choose who they want to spend their time with at any given moment. As with all animals at the Detroit Zoo, they also have the choice to go where they please in the habitat, so Zane might not always be visible.