The mosquito.
Mosquitos and fleas
The hippo and the black mamba.
COPD is responsible for more than 96,000 deaths annually
Volcanos burn
Heart attacks (myocardial infarctions) are the number one cause of cardiovascular deaths. Strokes (cerebrovascular accidents) are second.
Deaths from cardiovascular diseases accounted for more deaths than any other cause (with cancers being the runner-up).
The correct answer is the DEER (white tail & others). More human deaths result annually as well as cumulatively from auto accidents involving deer than from any other animal responsible cause.
Dangerous, yes, The human animal however is responsible for far more deaths.
Because the bombers had bombed their before and the London people did not invent blackouts then.
Heart Disease
the most casualties in a war was the American Civil War with 495,332 deaths and behind it is WW2 with 405,399 deaths.
Hippopotamus