The bison has been named America’s first national mammal, after the President signed the National Bison Legacy Act on Monday, the culmination of a four-year push by a coalition of over 60 organizations, businesses and Native American tribes. With the President’s signature, the measure will mean that the bison joins the bald eagle as an official animal symbol of the United States.
(For those tempted to whip out a banjo and start singing “Where the buffalo roam” from “Home on the Range,” note that bison and buffalo are different animals, even though Americans use the names interchangeably. The National Parks Service says early explorers in North America confused bison for “old world buffalo” — Asian and African buffalo — but bison have large shoulder humps and shorter horns.)
The designation aims to “prevent” the nearly half a million North American bison “from going extinct and to recognize the bison’s ecological, cultural, historical and economic importance to the United States,” according to Cristián Samper, President and CEO of the Wildlife Conservation Society.
The American plains bison, however, is not an endangered species. According to the World Wildlife Fund, the wild population of plains bison—with the memorable scientific name Bison bison bison— numbers 20,504. (The wood bison, Bison bison athabascae, which really is much less common, is a separate subspecies.)
That’s not to say American bison wasn’t once on the brink of extinction. In the 1500s, about 30 million bison are said to have roamed in North America, but by the late 1800s, their numbers dropped to less than 1,000, likely due to a combination of human actions and climate change. Riding horses made it easier for humans to hunt them throughout the 1700s, until they started starving to death when an 1841 deep freeze iced over the prairies so the bison couldn’t eat the grass, as TIME previously reported. Bison hunts also expanded in response to increased demand for leather, becoming more efficient as better guns were invented and steam power enabled the faster, cheaper transportation of hides.