Tigers can see 6 times better at night than humans.
305
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
We share 70% of our DNA with a slug.
218
The human sigh acts as a physiological reset button.
23
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218