Polar Bears Ursus maritimus Population: 22,000 to 31,000 Status: Vulnerable Weight: Males 360 Kg to 590 Kg. Females: 135 Kg to 320 Kg Range: Arctic Circle and adjacent land masses Life Expectancy: 25 years With males regularly growing up to 560 Kg, polar bears are the largest bears in the world and actually the largest […]