Why animals walk on four limbs while human beings walk on two limbs?

Question

Why animals walk on four limbs while human beings walk on two limbs?

Answer 1

first comment is dumb and probably came from a 5th graders mouth trying to make sense of the world on his own. In fact humans actually have poor eyesight compared to most mammals, we have poor everything compared to most animals similar in size (eyesight, smell, speed, hearing) even our muscles are weak. our intelligence is what makes us the most dominant animal on earth.