Bison Versus Buffalo

Never mind what the unofficial anthem of the American West says about buffalo roaming—this type of bovid is not found on U.S. soil. What we have stateside, making up the best-known herds in Yellowstone National Park and on Catalina Island, are bison.

Though bison are sometimes colloquially called buffalo, the two are biologically different, unconnected in their ranges, and can be told apart by a few distinguishing physical features. Here's everything you need to know about the two oft-confused families of ancient grazing giants.

Buffalo and Bison Classification
Buffalo and bison belong to the tribe Bovini, which includes medium to massive animals of the Bovidae family. The Bovidae family also includes antelopes, gazelles, goats, and sheep.

While a number of Bovini species are commonly called buffalo or bison (the anoa a "dwarf buffalo" and the gaur "Indian bison," for example), there are only four true bison and buffalo species.

American bison (Bison bison) roam in Yellowstone and are portrayed on the National Park Service's arrowhead emblem and the U.S. Department of the Interior's seal. They're the heaviest land animals in North America and, since 2016, the U.S.'s national mammal, joining the patriotic ranks of its national bird, the bald eagle.  READ MORE...

Wild Pigs and CO2

Wild Pigs Release as Much CO2 as More Than 1 Million Cars
They are like tractors plowing through fields.




Feral pigs have the same climate impact as 1.1 million cars, according to recent research.

Using modeling and mapping techniques, an international team of scientists predict that wild pigs are releasing 4.9 million metric tonnes of carbon dioxide each year around the world when they uproot soil.1

One of the study’s authors, Christopher O'Bryan, is a postdoctoral research fellow of the University of Queensland. He tells Treehugger that feral pigs are prolific globally.

“Wild pigs (Sus scrofa) are found on every continent except Antarctica but are native throughout most of Europe, Asia, and parts of northern Africa,” he says. “As such, they have been spread around the world by humans and are invasive species in Oceania, parts of Southeast Asia, parts of southern Africa, and North and South America.”

For the study, which was published in the journal Global Change Biology, researchers only looked at areas where wild pigs are invasive and not native.  READ MORE