Top 10 Dumbest Animals in the World

This heavily built parrot from New Zealand can't fly and freezes completely when danger approaches, hoping predators will overlook it.

Has one of the smallest brain volumes relative to its body and no longer recognizes eucalyptus leaves once they have been picked from the branch and placed on a flat plate.

A carnivore that eats almost exclusively low-calorie bamboo, has to chew twelve hours a day to survive and shows little interest in reproducing.

Its eyes are literally bigger than its brain, which leads to erratic panic behavior in which it sometimes runs in a straight line into fences.

Lived for centuries on Mauritius without natural enemies and therefore had no fear of humans at all, which led to its extinction within a few decades.

Notorious for its lack of spatial awareness; farm stories even claim that domestic turkeys stare upward during heavy rain until they drown.

Because of its slow reactions and poor eyesight, it occasionally mistakes its own arm for a tree branch, resulting in a painful fall.

A gigantic fish that, lacking a real tail fin, can hardly steer and often drifts helplessly into boats or nets.

When overpopulated, it falls into a collective panic and runs blindly in large groups over cliffs and into raging rivers.

Has deadly venom, but its own newborn young have to flee into trees because the adults would otherwise eat them without hesitation.