Bison can be aggressive when people don’t give them enough space, park officials said in their statement, and have injured ...

“Bison have a complex history since their near extinction over 100 years ago,” said Lisa Shipley, a professor at Washington State University who studies management of wild ungulates, which are large ...

Around 8 million buffalo were in the United States in 1870, and then in the span of 20 years there were less than 500. Today, in North America there are roughly 20,000 wild plains bison — like ...