The larger males within the park weigh around 300 pounds. A larger male outside the park weighs around six hundred pounds. To complete the comparison, the absolute largest American black bear ever weighed in North America tipped the scales at slightly over eight hundred pounds. From their nose to their tail, American Black bears generally average five to six feet in length, and are approximately thirty-five to forty five inches tall from ground to shoulder when standing on all four legs. All bears are much taller when standing on hind legs, which they do when they need to see or sniff something which is far away.
Scientists think the variance is due to genetics, food or perhaps climate differences.