The Dangerous (and Deadly) Animals Found in Each American State

Wild animals are part of what makes the United States so diverse, but some of them deserve a little more distance than others. Bears, mountain lions, alligators, venomous snakes, coyotes, and other potentially dangerous species can be found across the country, and while serious attacks are uncommon, they do happen.

That does not mean you should be afraid to head outside. In most cases, the best approach is simple: stay alert, give wildlife plenty of space, and never assume a wild animal is harmless just because it looks calm.

For this roundup, 24/7 Tempo looked at some of the most dangerous wild animals found in each state, based on their potential to seriously injure or kill a person. A few species show up more than once, which is probably not reassuring if you happen to live in their territory.

Alabama is crawling with dangerous animals, including American alligators, cottonmouth snakes, and copperhead snakes. However, the most dangerous animal in Alabama is the black widow. Female black widow spider bites can cause chest pain, swelling, and nausea. Death can happen, but is more common in young children and the elderly. Bites are rare, with only a few thousand reported a year.

Although Alaska has large animals like grizzly bears, polar bears, and moose, they aren't the most dangerous animals in the state. The most dangerous and deadliest animals in Alaska are dogs! Alaska is the state with the highest fatality rate in dog attacks.

Continuing our list of the deadliest and most dangerous animal in each U.S. state is the Western diamondback rattlesnake in Arizona. Although dangerous, don't be too scared. Only 7,000–8,000 people are bitten by venomous snakes in the U.S., and not all are rattlesnakes.

Whitetail deer are the most dangerous and deadliest animal in Arkansas. There are about 1 million whitetail deer in the state. According to State Farm, there are about 22,000 vehicle and deer collisions every year in the state. That's a lot!

The deadliest animals in California aren't bears or sharks, but Southern Pacific rattlesnakes. These deadly animals rarely bite, but when they do, they can inject snake venom that causes pain, rashes, blisters, nausea, and vomiting.

The chance of being attacked by a moose is slim, but there's always a chance in Colorado. In Colorado, the most dangerous animal is moose. They are strong and heavy animals, growing up to 1,600 pounds.

While moose are also dangerous in Connecticut, the next dangerous animal on our list is the timber rattlesnake. Timber rattlesnakes have very toxic bites. If not treated in enough time, a bite can be fatal.

Although uncommon in Delaware, the most dangerous animal in the state is the Portuguese man O war. They are rarely deadly but pack a powerful sting, even days after their death.

There are many deadly animals to choose from in Florida. The deadliest animal in Florida though is the American alligator. While attacks are uncommon, there is an average of eight fatal bites each year.

Georgia also has a lot of large and dangerous animals to choose from. However, the most dangerous animal in the state is the pygmy rattlesnake. While mortality rates are low, pygmy rattlesnake bites can cause swelling and loss of mobility. You can even lose your fingers!

One of the most deadliest and dangerous animals in Hawaii is the yellow-bellied sea snake. Although considered docile and shy, they are highly venomous.

Grizzly bears can be found throughout Idaho. They are one of the most dangerous animals in the state. Grizzly bears have a bite force of 975 PSI.

In Illinois, one of the more dangerous animals is the coyote. However, coyotes mostly pose a threat to livestock and domestic pets like cats and dogs. Coyotes rarely attack humans preferring to fight smaller animals.

A deadly animal in Indiana is the eastern copperhead. This snake species is venomous and is mostly found in the southern part of the state. Bites though are rare. The last fatal eastern copperhead bite in Indiana was recorded in 1931.

It's hard to decide which animal is the deadliest or most dangerous in Iowa. However, surprisingly, wasps are one of the most deadliest animals in the state. Wasps can sting multiple times, although the stings rarely cause death. Wasp stings though are very dangerous for those who are allergic! Not everyone knows they are allergic though until it's too late.

Timber rattlesnakes make our list again of the deadliest and most dangerous animal in each U.S. state. In Kansas, you can find these venomous snakes in the eastern third of the state.

Kentucky has a long list of dangerous animals to choose from. The winner for our list though is the American black bear. Black bears can weigh 300 pounds. They have a bite force of 800 PSI and a swipe force of 560 pounds.

Louisiana has many deadly and dangerous animals, but which one is the most dangerous? The winner of this title is the eastern diamondback rattlesnake. It's a venomous snake endemic to the Southeastern United States. Their bites can be fatal.

Moose are massive creatures. These large animals cause the deaths of 5 to 10 people in the United States throughout the year. In Maine, there are about 60,000 to 70,000 moose. Moose are especially dangerous if you're driving. Watch your surroundings as they sometimes cross roads or jump on highways unexpectedly.

Maryland isn't home to many deadly animals. Interestingly though, bull sharks live in Maryland. Sightings are super uncommon! Bull sharks are very aggressive. Although known for their aggression and unique ability to live in freshwater, attacks, much less fatal, are rare.

With so many dangerous animals, how do you choose just one? The deadliest and most dangerous animal in this state is the American black bear, although attacks are incredibly rare! However, there is always a chance. If you live in Massachusetts, maybe use a bear-proof trash can.

In Michigan, you can see black bears, moose, venomous spiders, and more! Any of these animals can be considered dangerous, but the most dangerous animal in the state is the eastern massasauga rattlesnake. The eastern massasauga rattlesnake though is shy and rarely seen.

Minnesota's deadliest and most dangerous animal is the coyote. While coyotes rarely attack humans, they can really harm, and even kill pets. They more commonly attack livestock. If you live in an area where there are coyotes, it's best to not leave your cat or dog outside without supervision.

Mississippi has more than just a few deadly animals. You can find sharks, alligators, bears, snakes, spiders, and scorpions in the state! The winner of this title though is the cottonmouth snake. These aggressive venomous snakes are about 2 to 4 feet long.

So, what animal is the most dangerous in Missouri? Is it a spider, snake, or bear? It's an even smaller animal, a tick! Ticks can carry diseases and leave painful marks on your body. They aren't always deadly but can lead to Lyme disease. Ticks can also affect dogs.

Grizzly bears make our list again. They are the deadliest and most dangerous animal in Montana, although the state is home to other large predators. There are up to around 2,000 grizzly bears in Montana. While they are dangerous because of their size, grizzly bear attacks and encounters are uncommon.

Nebraska is a quiet state. Few animals can kill you. The deadliest and most dangerous animal in the state is the black widow spider. This spider delivers a powerful and painful bite, injecting venom. While you can die from a black widow spider bite, it's rare. However, bites are uncomfortable and painful, sometimes causing rashes and blisters.

Nevada is filled with dangerous animals to stay clear from including snakes, scorpions, and large mammals. But which animal is the most dangerous or deadliest? The most dangerous animal in this state is the Mojave rattlesnake. These venomous snakes though are rarely seen. While their bites are painful, they are rarely deadly, especially with medical intervention.

Moose make their third appearance on this list. They are the most dangerous animals in New Hampshire as they cause awful car accidents. According to some reports, in the last five years, New Hampshire has averaged about 75 moose and vehicle collisions.

There aren't a lot of dangerous or deadly animals in New Jersey. However, the holder of this title is the coyote. While attacks are almost unheard of, there is growing concern as coyote populations continue to increase and grow more comfortable in urban settings. In New Jersey, there are around 4,000 to 6,000 coyotes.

New Mexico is home to so many venomous and dangerous animals that limiting the options for this title was hard. However, the most dangerous and deadliest animal in the state is the mountain lion. While attacks are uncommon, mountain lions are strong! One bite can definitely crack bones. Only two fatal mountain lion attacks have been recorded in the state.

Sometimes, the smallest of animals are the most dangerous. One of the most dangerous animals in New York is the mosquito. There are around 70 different types of mosquitos in the state. Although most don't spread disease, a few species do! Mosquitos can spread diseases like Dengue Fever, Malaria, and Zika Virus.

Off the coast of North Carolina, you can find Portuguese man-of-wars. They sometimes wash up on beaches. These venomous animals deliver powerful and potentially fatal stings. In 2023, at least six tourists on Oak Island were stung by this creature.

The deadliest and most dangerous animal in North Dakota is the prairie rattlesnake. The mention of rattlesnakes is scary, but their bites are rarely fatal! Still, you don't want to accidentally step on or scare one as their bites are painful.

Moving onto Ohio, the deadliest animal in this state is the whitetail deer. They once again make our list! According to the Ohio State Highway Patrol, 101,912 deer-related crashes have occurred in the state and 2% of these accidents were fatal.

Next on our list of the deadliest and most dangerous animals in each U.S. state is the western pygmy rattlesnake. Oklahoma is home to many species of rattlesnakes. The western pygmy rattlesnake bites when afraid or threatened, although bites are uncommon. Death is unlikely, but the bites are painful and can result in the loss of a limb or digit without medical intervention.

Oregon is home to one species of bear, the North American black bear. The state is home to up to 30,000 black bears. Although no fatal attacks have been recorded in the state, there have been several attacks. In 2023, a man in La Grande was attacked by a black bear. He first shot the black bear while the black bear was harassing his chickens. The next day, the bear attacked leaving the man with injuries on his arms and head.

Whitetail deer are gentle animals, but they cause multiple deaths in Pennsylvania each year. According to a report, Pennsylvania drivers have an astonishing 1-in-59 chance of a vehicular accident involving a game animal.

Rhode Island has quite a few dangerous animals, although encounters are rare. The title holder of the deadliest and most dangerous animal in the state is the tiger shark. Tiger sharks are one of the most aggressive shark species. Still, attacks are incredibly rare.

The most dangerous animal in South Carolina is the southern copperhead. These venomous snakes are around 2 feet long. They are excellent hunters, eating animals like cottontails, lizards, rats, baby turtles, and small snakes.

The deadliest animal in South Dakota is the bison. Although bison aren't known to bite or hunt humans, they've been recorded attacking. A woman visiting Custer State Park and hiking was charged and gored by a bison. The bison's horn went through her left thigh, leaving her paralyzed below the knee.

In Tennessee, the most dangerous animal is the black bear. For the most part, black bears are shy and stay clear from humans. However, attacks have happened in the state. In 2022, a black bear surprised and attacked a man in his cabin. Although they can be dangerous, we pose more of a threat to them than they do to us.

Texas is a large state. It has a surface area of 268,820 square miles. In this state, you can find ferocious bears, coyotes, sharks, alligators, snakes, and more. The most dangerous animal in the state is the alligator. In Texas, there are 400,000 to 500,000 American alligators. While attacks are rare, they can still happen so stay vigilant and never feed an alligator.

In Utah, the most dangerous and deadliest animal is the coyote. Although smaller than a wolf, coyotes can do a lot of damage. They rarely attack or approach humans though. However, you should keep an eye on your dog as coyotes attack domestic pets. Coyotes also attack and kill farm animals.

Next on our list of the deadliest and most dangerous animal in each U.S. state are moose in Vermont. These large animals charge at people and also cause car accidents while stepping on the road. Moose are heavy and can be hard to safely avoid.

There are so many dangerous animals to choose from in Virginia. However, the most dangerous and deadliest animal to make our list for Virginia is the bull shark. Although bull sharks can be found off the coast of Virginia, attacks are uncommon. The last fatal shark attack in Virginia occurred in 2001.

What about Washington State? Which is the most dangerous animal in the Evergreen State? Although encounters are uncommon, grizzly bears are the most dangerous animals in Washington. While attacks are uncommon, no one wants to be in that situation. Experts recommend taking bear spray if you're hiking in the Selkirk Mountains.

The whitetail deer lands on our list again. Although deer don't attack humans and pose very little threat, they are extremely dangerous on the road. According to the West Virginia Department of Transportation, about 10,618 deer were hit on West Virginia highways from January 1st, 2023 to November 20th, 2023.

There are a few very dangerous animals in Wisconsin. However, the winner of this title is the black bear. While black bears are the most dangerous animals in the state, attacks are rare. There have only been about a dozen black bear attacks in Wisconsin since 2013.

The deadliest and most dangerous animal in Wyoming is the bison. These massive animals are known to attack when they feel threatened. They can weigh around 2,000 pounds! In July of 2023, a woman near lakeside cabins in Yellowstone National Park was attacked by a bison and sustained serious injuries.