Of the 4,060 species of mammals that inhabit the world, fifty-three occur within the Adirondack Park. These mammals represent 7 orders and 17 families. Some species, like the opossum and striped skunk ...

The typical rate of extinction differs for different groups of organisms. Mammals, for instance, have an average species "lifespan" from origination to extinction of about 1 million years ...

Marine mammals—a group of animals that are ecologically tied to the ocean environment—cannot thrive in confinement. No concrete tank or small sea pen can provide an animal with anything close to the ...