The moose (North America) or Eurasian elk (Europe) (Alces alces) is the largest extant species in the deer family. Moose typically inhabit boreal and mixed deciduous forests of the Northern Hemisphere in temperate to subarctic climates.
Unlike most other deer species, moose are solitary animals and do not form herds. Although generally slow-moving and sedentary, moose can become aggressive and move surprisingly fast if angered or startled. Their mating season in the autumn can lead to spectacular fights between males competing for the right to mate with a particular female. (source)
Thank you Scott!