Polar Bears - Data, Pictures and Videos

[GreenGrolar]

Longevity
Polar bears can live 20 to 30 years, but only a small percentage of polar bears live past 15 to 18 years.
The oldest known polar bear in the Arctic lived 32 years. The oldest known polar bear in a zoological park lived 45 years.

Aging Studies
Each year, as a polar bear grows, a thin layer of cementum is added to each tooth. Age can be estimated by examining a thin slice of tooth and counting the layers. To estimate the age of a live polar bear, researchers can extract one small, vestigial premolar tooth..

seaworld.org/animals/all-about/polar-bear/longevity/ Reply