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They are everywhere on the continent and have adapted to human development. Learn all about the most common squirrels in ...

Aim To evaluate the relationship of climate and physiography to species density and ecological diversity of North American mammals. Location North America, including Mexico and Central America.

North America used to be crawling with giant mammals, from dire wolves to big cats. Horses and camels evolved on the continent while others, like bison, crossed over from Asia. Most of these mammals ...

Journal of Biogeography, Vol. 32, No. 6 (Jun., 2005), pp. 961-971 (11 pages) Aim To assess the relationship between species richness and distribution within regions arranged along a latitudinal ...

Woolly mammoths, giant armadillos and three species of camels were among more than 30 mammals that were hunted to extinction by North American humans 13,000 to 12,000 years ago, according to the most ...

Skull of a Glyptodon from Buenos Aires, Argentina. A member of an extinct group of relatives of armadillos with several species reaching sizes above a ton that migrated from South America to North ...

Two fossil teeth from a distant relative of North American gophers have scientists rethinking how some mammals reached the Caribbean Islands. Two fossil teeth from a distant relative of North American ...

PUEBLO, Colo. — Colorado homeowner Reese Nettles got a shock on Nov. 8 when he went out to his garage to lift weights and noticed a ferret peeking out from under his table saw. It had been a day and a ...

South America is filled with mammals from North America, but why more didn’t survive the reverse trip has been a natural history mystery. By Asher Elbein Millions of years before humans set foot in ...