Little is known about hearing in polar bears. However, in air polar bears probably hear at a slightly wider range of frequencies than humans (up to 25 kHz), but not as high as a dog. Humans can hear sounds with frequencies as low as 0.02 kHz and as high as 20 kHz, while dogs can hear out to about 35 kHz.
||Hubbs-SeaWorld Research Institute is part of a study on polar bear hearing involving polar bears from SeaWorld San Diego and the San Diego Zoo. Preliminary results indicate that polar bears may be specialized to communicate at low frequencies.