Moose Animal The moose or elk, is a member of the New World deer subfamily and is the largest and heaviest extant species in the deer family. Most adult male moose have distinctive broad, palmate antlers; most other members of the deer family have antlers with a dendritic configuration. Wikipedia Height: 4.6 – 6.9 ft. (Adult, At Shoulder) Speed: 35 mph (Maximum, Adult, Running) Conservation status: Least Concern (Population increasing) Encyclopedia of Life Lifespan: 15 – 25 years Trophic level: Herbivorous Encyclopedia of Life Mass: Male: 840 – 1,500 lbs (Adult), Female: 440 – 790 lbs (Adult)