The American mastodon (Mammut americanum) is an extinct North American proboscidean that lived from about 3.7 million years ago until about 10,000 years B.C. It was the last surviving member of the mastodon family. It is known from fossils found ranging from present-day Alaska and New England in the north, to Florida, southern California, and as far south as Honduras. Its main habitat was cold spruce woodlands, and it is believed to have browsed in herds.
Evidence suggests that TB (Tuberculosis) was common amongst Mastodon's and may be a main cause of there extinction.
Unlike its close relative the Woolly Mammoth it could not eat grass and many older Mastodons show signs of Tooth damage from consuming grass. One Mastodon was found near the town of Dent in the USA with these signs this was illustrated in Wild New World where the Mastodon was shown to be a contemporary of Homotherium in at least one area.
The Mastodon is one of the most recognisable Ice Age animals alongwith Mammoths and Sabre Toothed Cats (Smilodon)