As Africa's apex predator, the lion is a top predator worldwide. Despite not being their natural prey, lions kill 200 people annually.
Older bull elephants, young males, and elephants with kids are very deadly, weighing up to 7,000 kg.
Crocodiles reside in lakes, rivers, marshes, and even saltwater throughout Africa, Asia, Australia, and the Americas.
Many people forget the fact that the hippopotamus is Africa's top human killer.
For most snakebite deaths, the victim does not identify the species of snake that bit them.
The mosquito is the world's most hazardous critter, despite its small size.
Man's best buddy is a killer. Around 35,000 people die of rabies each year (mainly in Africa and Asia), and 99 percent of those cases are caused by canine saliva.
Freshwater snails carry deadly parasites. Freshwater snails can carry parasitic flatworms that cause schistosomiasis, a painful disease.
Tsetse flies resemble houseflies, but are much more harmful. Blood-sucking flies endemic to sub-Saharan Africa carry and transmit trypanosomes.