I'd bet on the Polar Bear:

Physical Characteristics
Polar bears are the largest living land carnivore, with males reaching a weight of up to 650 kg (1,433 lbs.) and a length up to nearly 3 m (9.9 ft). Females are smaller, weighing up to 250 kg (551 lbs.) and reaching a length of 2.5 m (8.2 ft). The largest polar bear ever recorded weighed 1,002 kg (2,209 lbs.) and measured 3.7 m (12 ft) in length.
http://www.zoocheck.com/programs/wil...en/facts.shtml

These are the stats for the Gorilla:

Height: malesā??5.6 to 6 feet (1.7 to 1.8 meters); femalesā??up to 5 feet (1.5 meters)
Weight: malesā??300 to 500 pounds (136 to 227 kilograms); femalesā??150 to 200 pounds (68 to 91 kilograms)
http://www.sandiegozoo.org/animalbytes/t-gorilla.html