Mother brown bears protect cubs with human shields | Science | AAAS - adult male bear

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Solving the mystery of bear cub killings adult male bear


New research provides a surprising insight into how mother bears may keep their cubs safe from dangerous adult males. Photograph by.

In two cases, researchers observed that female bears were also killed. Females are smaller than adult male bears and not much of a match.

The brown bear (Ursus arctos) is a bear that is found across much of northern Eurasia and .. The average weight of adult male bears from 19 populations, from around the world and various subspecies (including both large- and small- bodied.

Adult male black bears range from about to centimeters (50 to 75 inches ) in length and weigh 60 to kilograms ( to pounds). Females.

Grizzly bears are even less productive: in 10 years, a male a female born today Sub-adult males, on the other hand, are usually discouraged from staying and.