Whether you're right-handed or left-handed, you've probably stopped noticing how often you rely on your dominant hand. But have you ever stopped to wonder why you only eat with your left or doodle with your right?
SciShow aims to answer that question in today's video titled, "Why Are There Righties & Lefties?" According to host Hank Green, while there is an enormous divide between righties and lefties (90% of humans versus 10% of humans, roughly), hand dominance is unique to humans among primates.
And while dogs and cats tend to favor a paw, he adds, the split between righties and lefties is just about even. So why are humans different in this respect? Blame the brain hemisphere. Watch the video above to find out.