Did you know
that people thought Leonardo was weird not only because he was left handed
but also because he kept dead bodies in his house ? The dead
bodies were for his studies on the human body . He disected both human
bodies and animal bodies .
He also studied birds in order to design some type of contraption to get man off the ground . Although he never got around to actually building his inventions, he was the first person to design the helicopter . He also designed "the digging machine " that used a metal claw to dig out the side of a hill .