In prehistoric times there were several really mean critters acording to the fossil record. Today the deadliest animal in Idaho is man.
human
lion
yes it is an prehistoric animal
the grizzly bear
mankind
Basilosaurus
It can tell about prehistoric diets that the animal had.
The world's most deadliest animal is the mosquitoe, because of all the diseases it carries.
The Box Jellyfish
wolverines
is the elephant when it is angry