Biologists think that humans are the only animals who cry emotional tears.

Biologists think that humans are the only animals who cry emotional

More from the Human Body Facts niche...

Human Body Facts

Eyes are made up of over 2 million working parts

Human Body Facts

Although the function of tears is to keep eyes clean, scientists don’t

Human Body Facts

Scientists believe that processing your vision uses around half of the

Human Body Facts

You are likely to blink more often when you are talking

Human Body Facts

People with blue eyes are more sensitive to pain than others

Human Body Facts

Amazingly, you can actually smell in stereo – signals from each nostril