There are three sub-species of North American moose—Alaska-Yukon, Canada, and Shiras’. Fewer measurements are taken for moose than for the other antlered categories. Despite this, moose can be one of the most complex trophies to measure. The largest in both body and antler size is the Alaska-Yukon moose found in Alaska, Northwest Territories and the Yukon. A prime Alaska-Yukon bull can weigh up to 1,600 pounds, stand over 7 feet tall at the shoulder, and grow antlers exceeding 6 feet wide and weighing up to 90 pounds.