What is the rarest mammal in North America?
Do you believe in miracles? We bet the biologists do as this creature was thought to be extinct. By the late 1970s, nobody could imagine that black-footed ferrets managed to survive somehow. They were rediscovered 25 years ago and today American biologists try their best in order to reintroduce the species back into the wild. By the way, domesticated ferrets belong to a different species, brought from Europe.