Frosty the polar bear dies at Denver Zoo

The Denver Zoo is mourning the loss of Frosty the polar bear.

The 25-year-old male was euthanized Thursday after suffering declining health because of liver cancer. The zoo said he was the oldest male polar bear living in captivity in North America.

Polar bears typically live for between 20 and 25 years.

Frosty was born at the Cleveland Metroparks Zoo in Ohio in 1984. He came to the Denver Zoo from the Tulsa Zoo in 2006.

The Denver Zoo also lost another older polar bear in April. Twenty-three-year-old Voda had renal disease and also was euthanized.

The zoo still has two other polar bears - females Soosha and Cranbeary.