Mosquitoes: Mosquitoes are responsible for the most significant number of deaths in the United States due to the diseases they transmit, such as malaria, dengue fever, West Nile virus, and Zika virus.
Deer: Deer cause a significant number of fatal car accidents each year.
Bees, wasps, and hornets: These stinging insects can cause severe allergic reactions, leading to anaphylaxis, which can be fatal.
Dogs: Dog bites can cause serious injuries and infections, which can sometimes be fatal.
Snakes: Venomous snakes such as rattlesnakes and copperheads are responsible for a small number of deaths each year.
Spiders: Venomous spiders such as the black widow and brown recluse can cause serious medical complications and sometimes lead to death.
Alligators: Alligators can be dangerous to humans and cause fatalities each year, especially in Florida.
Sharks: Although rare, shark attacks can be fatal.
Cougars and other big cats: These animals are responsible for a small number of fatalities each year.
Bears: Black bears and grizzly bears can be dangerous to humans and cause fatalities each year.