A study on black bears found they are the most common bears in North America — and have only killed 63 people in the United States and Canada over the last 109 years.

Experts state that black bears are less confrontational than grizzlies and polar bears because of how they evolved.“

Black bears evolved in thickly forested areas and can escape to the top of a tree, so they never really had to defend themselves,” said Chris Morgan, a bear ecologist who wrote the just-published “Bears of the Last Frontier” told The New York Times.