Grizzly Bear: Found in the western United States and Canada, grizzly bears can be extremely dangerous if provoked.
American Alligator: Found in the southeastern United States, alligators are powerful predators with a strong bite.
Mountain Lion: Also known as cougars or pumas, these large cats are found throughout North America and can be dangerous to humans.
Black Widow Spider: Found in various parts of the continent, black widow spiders have a venomous bite that can be lethal to humans.
Rattlesnake: Several species of rattlesnakes are found in North America, all of which are venomous and can be deadly if bitten.
Bull Shark: Known for its aggressive nature, bull sharks are found in coastal waters and can be dangerous to swimmers and divers.
Moose: While not typically thought of as dangerous, moose can be aggressive, especially during mating season.
Coyote: Found throughout North America, coyotes can pose a threat to humans, particularly in areas where their natural habitat has been encroached upon.