Please be more specific...
The mosquito is responsible for the most deaths through Malaria
yes you are correct mosquito`s are the animals responsible for human deaths
Mao was responsible for more deaths in history than even Stalin and Hitler combined.
Drinking and Driving.
Cancer
in the Battle of the cake thousands died quickly.
WW1 at the Battle of the Sommes.
storm surge
Hippos:)
Not really a fish, but the Box Jellyfish kills the most.
Indian Cobra (Naja naja)
most of the deaths occurred between concord and Boston as the American snipers picked off a lot of British as they were retreating.