Mosquitoes, the pesky bugs that suck blood and transmit viruses from person to person are responsible for the most animal-related deaths.
An estimated 1 lakh people are killed every year by snakes. The most venomous snake in the world is the Inland Taipan, also known as the Western Taipan.
Dogs infected by the rabies virus are one of the deadliest animals out there, though the virus can be prevented using vaccines. About 35,000 deaths can be attributed to rabies according to WHO.
The freshwater snail carries parasitic worms that infect people with a disease called schistosomiasis. Millions of people contract the infection, and the WHO estimates over 20,000 deaths.
The assassin bug, also called the kissing bug, is responsible for carrying Chagas disease, which kills about 12,000 people a year on average.
The tsetse fly transmits a disease called sleeping sickness, a parasitic infection that at first can lead to headaches but later can lead to death.
The Ascaris roundworm leads to an infection called aschariasis that kills an estimated 4,500 people a year.
Crocodiles are now considered the large animal responsible for the most human deaths in Africa. That kills an estimated 1000 people a year.
Tapeworm is responsible for an infection called cysticerosis that kills an estimated 700 people a year.
Hippopotamus is the world's deadliest large land mammal, killing an estimated 500 people every year.