The moose (North America) or Eurasian elk (Europe), Alces alces, is a member of the Cervidae family and one of the largest extant species in the deer family. It is the largest and heaviest extant species in the deer family. Moose are distinguished by the broad, flat antlers of the males (bulls); other members of the deer family carry antlers that are more rounded in shape. Mature adult bulls weigh between 700 and 1,000 kg (1,500 and 2,200 lb), while cows weigh 500 to 600 kg (1,100 to 1,300 lb). Occasionally, much larger moose are known to exist. Length ranges from 1.7 to 2.1 m (5.6 to 6.9 ft) in body length with shoulder heights between 1.2 and 1.5 m (4 ft) and weigh from 400 to 700 kg (880 to 1,540 lb). Their fur is generally reddish-brown in color though it may range to almost black in some northern populations. The coat is soft and dense, with longer, coarser guard hairs. Male moose have broader and flatter antlers than female (known as cows). Calf moose have more reddish coated and spotted coats.
With their remarkable size, strange proportions, and unusual behavior, moose often evoke a sense of awe, wonder, and humor among those who observe them. Their sheer bulk and power can also instill fear or caution. Native American tribes such as Algonquian peoples incorporated the moose in their legends and mythology. The moose was called “Whritoo” by some tribes. To others, he was the protector of the forest or the bringer of messages. Moose appeared regularly in oral stories and traditions. They appeared as sources of both nutritious food and valuable materials like antlers and sinews. They could also be unpredictable and dangerous, requiring respect. Moose had deep cultural significance for many Native peoples and remain an iconic symbol of the northern wilderness.
Moose are found throughout Alaska and Canada, as well as some northern parts of the contiguous United States, including Vermont, New Hampshire, and Maine. They are the largest species in the deer family Cervidae and are distinguished by the broad, flat antlers of the males (called bulls). Mature bulls can stand 1.5–2 m (4.9–6.6 ft) tall at the shoulder and weigh between 500–1,000 kg (1,100–2,200 lb). Cows (females) are 10–15% smaller than bulls and calves average 118 kg (260 lb) at birth. Moose range freely throughout boreal forests and temperate deciduous and mixed forests of the Northern Hemisphere in the Far North and at altitudes in the western North American Cordillera. Unlike most other deer species, moose are solitary animals and do not form herds. Several may gather to eat and drink together.
Moose often avoid areas with human activities and presence when possible. Their sometimes erratic behavior often leads them to interactions with humans. In urban or suburban areas, moose may behave abnormally or aggressively if cornered due to stress. This can pose a danger, though moose will usually flee if given the opportunity. If startled or provoked, moose may charge at humans. In defense of their young or during the rut, bull moose become increasingly aggressive. Attacks on humans are not common but can cause serious injuries or be fatal on rare occasions due to the animal’s large size. Such incidents are more likely to involve cow moose defending calves in spring than solitary bulls. Moose populations are monitored by wildlife management agencies and annual harvest quotas are established based on research into their numbers, distribution, and health.
Moose fare best in vast boreal forests and areas with cold or temperate climates featuring lakes, wetlands, and forests of aspen, birch, or willow. While they usually avoid human contact, moose have adapted well to live near people, even in suburbs or urban parks at times. This ability to utilize fragmented habitats has allowed their range to expand southward in recent decades alongside human development. Collisions with vehicles pose a growing mortality risk. Moose tend to be most active at dawn, dusk, and nighttime. They avoid midday heat and browsing too much when active. Major threats include hunting, predation, parasites and diseases that can spread where populations become too dense. Climate change impacts like warming temperatures and more frequent extreme weather may also stress moose beyond their adaptive capabilities over the long run.
Despite being herbivores, moose are still adept at protecting themselves from predators thanks to their sheer size and kicking power with their heavy legs and cloven hooves. Adults usually have no predators besides humans. Wolves, bears, and less often lynx, mountain lions or wolverines can and do prey on calves, and occasionally full-grown adult moose may fall victim under the right circumstances. Calving occurs in late May through June. A single calf is common, twins occur 15% of the time. Calves stay with their mothers until nearly full grown over a year later. Adult moose have few natural predators besides humans, but wolves and bears may prey on calves or infirm adults. Moose are generally mild-mannered herbivores but can become aggressive if wounded or when defending young. Attacks on humans by moose are quite rare but not unheard of if provoked or startled too closely.
During fall mating season or “rut”, moose become more erratic and unpredictable. The male moose bellows to establish dominance, and battles ensue between competing bulls. Victorious bulls gain breeding privileges with cows. This time is also when car collisions with moose rise due to their distracted state. Bulls fast during the rutting period in September and October, living off fat reserves while expending much energy in territorial behavior and mating efforts. After the energetic rut, they enter a recovery period. Pregnant cows enter the winter in better condition than bulls. Calving occurs in late May through June. Twins are sometimes born but one calf is more typical. Despite their great size, moose are adept swimmers but can drown if pursued into deep water by predators while exhausted. They feed on various aquatic plants in summer alongside terrestrial browsing of trees and shrubs.
Moose have no natural predators besides humans once adults, but calves and occasionally infirm grown moose may fall prey to wolves, bears, wolverines or mountain lions. Wolverines in particular will scavenge moose kills by other predators. Moose evolved among predator populations in Eurasia and adapted anti-predator defenses. Their large bodies, sharp hooves and kicking ability deters all but the most determined predators in North America today. Moose are generally mild-mannered herbivores but may become alarmingly aggressive if startled too closely or defending young. In rare cases they also charge and crush sled dogs, but usually give warning signs first. Attacks on humans are quite rare but can lead to serious injuries or rarely death when they occur due to the animal’s great mass. Such incidents most often involve females defending calves in spring or bulls in the fall rut.
Moose are truly iconic symbols of northern wilderness that evoke deep cultural meaning for Indigenous communities. Their sheer size and unusual appearance also captivate modern observers and impart a sense of wild majesty. While usually solitary and avoiding human contact when possible, moose have adapted well to fragmented habitats near people. Interactions with vehicles and aggressive behavior in rare defense situations pose some risks to human safety. Climate impacts and other cumulative threats also endanger moose populations in some areas. Overall, moose remain remarkably resilient megafauna that continue to evoke wonder in forest and tundra realms across the circumpolar north. Their great cultural and ecological significance warrants ongoing conservation efforts.
Andrew Stroud