
Crab Facts: Claws, Shells & Secret Behaviors
Crabs are crustaceans found on every continent with over 7,000 species. Discover why crabs walk sideways, trade shells, and grow claws stronger than jaws.

Moose are the largest deer species with males weighing up to 1,500 pounds. Learn about moose antlers, diet, habitat, behaviors, and adaptations.
Moose are the largest members of the deer family and one of the tallest mammals in North America. Male moose, called bulls, can weigh up to 1,500 pounds and stand nearly 7 feet tall at the shoulder.
Male moose grow enormous antlers that are among the fastest growing tissues in the animal kingdom. These antlers can span up to 6 feet across and weigh up to 40 pounds. Bulls shed their antlers every winter and regrow a larger set the following spring. Antler growth takes just three to five months, requiring massive amounts of calcium and nutrients.
Moose are herbivores that consume massive quantities of vegetation daily. An adult moose eats 40 to 60 pounds of food each day during summer. Their long legs and flexible necks allow them to reach vegetation up to 10 feet high. They can dive up to 20 feet deep to reach underwater vegetation.
Moose inhabit boreal and mixed deciduous forests across the northern hemisphere. In North America, they range from Alaska and Canada south to the northern United States. European moose, called elk in Europe, live in Scandinavia and Russia. Moose cannot tolerate prolonged exposure to temperatures above 57°F in summer and seek shade or water to cool down.
Moose are generally solitary animals except during mating season and when mothers raise calves. Bulls become aggressive during the autumn rut from September to October. They compete for females by displaying their antlers, thrashing vegetation, and sometimes engaging in violent fights. Bulls make deep grunting calls and cows respond with moaning sounds.
Newborn calves weigh 25 to 35 pounds and can stand within hours of birth. Young moose grow rapidly, gaining about 5 pounds per day during their first months. They reach sexual maturity at 1.5 to 2.5 years old. Bulls continue growing until about age 8 while females reach full size earlier.
Moose possess numerous adaptations for survival in harsh northern climates. Their hollow guard hairs provide excellent insulation against frigid temperatures. Long legs help them walk through snow up to 3 feet deep without difficulty. During winter, moose reduce their metabolism by up to 30% to conserve energy.
The word moose comes from the Algonquian languages, meaning twig eater or he who strips off bark.
Native American tribes relied on moose for food, clothing, tools, and shelter materials for thousands of years.
Teddy Roosevelt established conservation measures that helped moose populations recover from overhunting in the early 1900s.
In Europe, moose are called elk, while North Americans use elk to refer to a completely different species called wapiti.
Moose once ranged much further south, with fossils found as far as Georgia, before warming climates restricted their range.
Research proved moose can dive up to 20 feet deep and hold their breath over a minute while feeding on aquatic plants.
Scientists discovered moose antlers grow up to an inch per day during peak growth, requiring enormous calcium intake.
Studies showed moose cause more human injuries than bears and wolves combined due to their size and territorial behavior.
Research revealed moose reduce their metabolism by up to 30% in winter to conserve energy during food scarcity.
Scientists found moose cannot tolerate temperatures above 57°F for extended periods, seeking water or shade to cool down.
Moose became symbols of the North American and Scandinavian wilderness, appearing on flags, logos, and souvenirs.
Rocky and Bullwinkle introduced Bullwinkle J. Moose to American popular culture in 1959.
Moose watching became a significant tourism industry in Alaska, Maine, and Canada.
Warning signs featuring moose silhouettes became iconic symbols of northern highways.
Moose meat remains an important food source for indigenous communities and rural populations in the north.
Before climate change accelerated, moose thrived across northern forests with cold winters that controlled parasites. Populations were stable, and the main management concerns were sustainable hunting and vehicle collisions.
After decades of warming, moose face unprecedented threats from winter ticks that no longer die off in shortened winters. Single moose can host over 90,000 ticks, causing fatal blood loss. Heat stress forces them to rest when they should be feeding. Southern populations are declining while managers seek solutions.
Moose antlers are among the fastest growing tissues in nature, reaching full size in just three to five months
A large moose can weigh as much as 10 average adult humans combined at 1,500 pounds
Moose can dive up to 20 feet underwater to feed on aquatic plants and hold their breath over a minute
Despite weighing up to 1,500 pounds, moose can run at speeds up to 35 mph through dense forest
Moose cause more injuries to humans than bears and wolves combined in North America
The word moose comes from the Algonquian language meaning twig eater or he who strips off bark
Climate change is causing moose population declines as warming temperatures increase parasite loads and heat stress
Vehicle collisions with moose kill dozens of people annually and cause millions in damages
Winter tick infestations have exploded with shorter winters, with individual moose hosting over 90,000 ticks
Moose serve as indicator species for boreal forest ecosystem health
Population management balances hunting traditions, vehicle safety, and conservation goals
How much do you know? Take this quick quiz to find out!
Moose cause more injuries than bears or wolves. They attack more people than these predators combined in areas where they coexist.
Moose can dive 20 feet underwater. They submerge completely and hold their breath over a minute to eat aquatic plants.
Moose antlers are among the fastest growing tissue. They reach full size in 3 to 5 months, growing up to an inch per day.
Moose cannot tolerate heat. They seek water or shade when temperatures exceed 57°F because they overheat easily.
The name moose means twig eater. It comes from Algonquian languages describing their bark stripping feeding behavior.
Moose and elk names are confusing. In Europe, moose are called elk, while American elk are actually wapiti, a different species.
Male moose can weigh 840 to 1,500 pounds and stand 5 to 6.9 feet tall at the shoulder. Females are smaller at 440 to 790 pounds. Alaskan moose are the largest subspecies. The tallest moose on record stood over 7.5 feet at the shoulder.
This article is reviewed by the Pagefacts team.
Editorial Approach:
This article reveals moose injure more people than bears and wolves combined, explains their remarkable antler growth of up to an inch per day, and shows how climate change is threatening populations through tick infestations and heat stress.
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