Does the sasquatch exist or not? As a wildlife biologist Dr. Bindernagel has approached the existence of the sasquatch in the same way that he would assess the existence of any large mammal, be it the grizzly bear, black bear, or mountain gorilla. His view is that not only do we have sufficient evidence to treat the sasquatch as a bona fide member of North America's spectrum of large mammals, but that we already know a great deal about its biology and ecology.