17 Most Terrifying Animals in North America

North America has an abundance of deadly animals that injure and kill locals and tourists every year. The brown bear is the most lethal, and while other animals are less dangerous, they are no less terrifying. Here are 17 of the most scary animals to encounter in North America.

Grizzly Bear

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This subspecies of the brown bear lives in Alaska, Canada, the Northwest, and Yellowstone and Grand Teton National Parks. Britannica notes, “Large adult grizzlies may be about 2.5 meters (8 feet) long and weigh about 410 kg (900 pounds).” They are known for their poor eyesight, sprinting speeds of 35 mph, and being infamous for attacking humans without provocation.

Moose

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The moose is the tallest land animal in North America, famous for its massive size and distinct antlers. Moose have been hunted since the Stone Age, and while they are generally not aggressive, car collisions with them are particularly dangerous due to their size and height.

Black Widow Spider

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Although bites from the black widow spider are rare in North America, their neurotoxic venom can cause severe muscle pain and spasms. This spider genus prefers dark, undisturbed places, and the prevalence of sexual cannibalism in females inspired their name and eerie reputation.

American Alligator

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Smithsonian’s National Zoo argues that this species is a conservation success story after its population recovered from the brink of extinction. Its armored body, muscular tail, and tremendous bite force make it a fearsome predator.

Mountain Lion

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According to the National Wildlife Federation, “The mountain lion’s range spreads all across the Americas, from the Canadian Yukon to the Strait of Magellan, the greatest range of any living mammal in the Americas.” These cats can weigh up to 220 pounds, and although attacks on humans are rare, as humans continue to move into their range, attacks become more likely.

Coyote

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This canine species has adapted well to urban environments as metropolitan areas have grown in North America. Urban coyotes tend to live longer than their wild counterparts, rarely attack humans, and are infamous for preying on small dogs and cats.

Bull Shark

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Unlike most sharks, this species can thrive in salt and freshwater, including rivers close to human populations in North America, notably the Potomac River in Maryland and the Mississippi River as far upstream as Alton, Illinois. Bull sharks are infamous for their aggression and unpredictability and are considered one of the most dangerous shark species to humans.

Rattlesnake

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Every known rattlesnake species is native to the Americas, but as Britannica notes, they “are most abundant and diverse in the deserts of the southwestern United States and northern Mexico.” While rattlesnakes are fairly timid, their venomous bite is excruciating.

Canadian Lynx

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The Canadian lynx is primarily nocturnal and solitary, rarely encountered by humans. Their diet heavily relies on snowshoe hares, and their hunting skills are adapted to snowy environments. Climate change and human encroachment into their natural habitat have pushed them closer to human settlements.

Brown Recluse Spider

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The brown recluse spider’s bite contains necrotic venom that can cause significant tissue damage, but it generally avoids biting humans. True to its name, it prefers undisturbed places, frequently building its webs in closets, garages, woodpiles, and sheds.

Polar Bear

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The polar bear is a fearsome apex predator that plays a crucial role in the Arctic ecosystem. Global warming is threatening their habitat. WWF notes that “as their sea ice habitat recedes earlier in the spring and forms later in the fall, polar bears are increasingly spending longer periods on land, where they are often attracted to areas where humans live.”

Wolverine

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Wolverines are famous for their ferocious fighting style, often taking down much larger prey than themselves. Highly territorial, they can become aggressive if they feel threatened, and they are known for their ability to adapt to harsh climates.

American Bison

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The American bison is one of North America’s largest land animals and almost went extinct in the 1870s. Their numbers have since rebounded, which has led to increased human interaction, and they are now primarily raised for their meat, wool, and dairy products.

Red Fox

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While the red fox generally poses no threat to humans, it is known for raiding chicken coops and attacking pet cats. The CDC warns that all fox bites must be considered a potential exposure to rabies, as foxes are known to carry the disease.

Bald Eagle

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The bald eagle is the national bird of the U.S. and is revered. It appears on the Great Seal. Britannica notes that the species preys “on other birds, small mammals, snakes, turtles, and crabs, and they readily eat carrion.” In the late 20th century, it was on the brink of extirpation in America, but its populations have since recovered.

Great Horned Owl

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This owl is a nocturnal predator that hunts rabbits, rats, voles, and other small mammals, birds, amphibians, and invertebrates. They will aggressively defend their nest from those who venture too close, and they are often associated with wisdom in folklore.

Jellyfish

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The most common jellyfish in the U.S. are box jellyfish, cannonball jellyfish, and subtropical jellyfish. The box jellyfish is particularly deadly, with venomous tentacles that can cause victims paralysis, severe pain, and even death.

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