What animal has killed the most humans? Well that is easy to answer. In my opinion two things have caused the most human deaths; other humans and disease. The smartest creature, man, and the smallest creatures, germs, bacteria, and molds have been responsible for the most human deaths, hands down.
OK, so you say that is cheating, you want to know what animal kills the most people. I would say, if you classify cold blooded creatures as animals, that snakes would be on top of the list and then would come alligators and crocodiles. Why just back earlier this month, July 3rd, a young 28 year old fellow named Tommie Woodward was killed by an alligator here in Texas. Despite warnings, he chose to swim in alligator invested waters, and of course, he was killed by one of them.
Above, I stated that humans cause a lot of deaths. Back in 2013, 37,719 highway deaths occurred!! And what about wars? Yes, we humans are pretty good at killing off ourselves, no help needed from animals. Of course, at one time animals ruled this earth and I am sure they will regain their reign after mankind is gone. Only because of science and medicine has man been able to exist in this world that he has over populated and the numbers are still growing. This does not paint a bright picture for mankind, but insects and animals will probably survive. They made a test and found out that the cockroach was not affected by radiation. . . that means they could survive a nuclear war. Now that I have painted such a pretty picture of our future, have a nice day, you hear?