Bears include the most massive extant terrestrial members of the order Carnivora.
Polar bears weigh up to 1,600 lb (730 kg).
The smallest are the sun bears of Asia, which weigh up to 150 lb (68 kg).
Body weight varies throughout the year in bears of temperate and arctic climates, as they build up fat reserves in the summer and autumn and lose weight during the winter.[30] Head-and-body length can range from 150 cm (59 in) in sun bears to 244 cm (96 in) in polar bears.