Environmental groups’ view of the animal world sometimes resembles Disney’s Bambi, with owls and rabbits mingling peacefully and Man lurking as the only predator, aided by his evil servant the hunting dog. A good example is the National Wildlife Federation, which wants to reintroduce wild animals into the suburban and urban enclaves from which development has expelled them by encouraging homeowners to develop “healthy and sustainable wildlife habitats” on their properties. The NWF has even produced a television program—Backyard Habitat, shown on Animal Planet—in which experts advise homeowners in places like Chicago about how to attract animals with [...]