The human eye blinks an average of 4,200,000 times a year.
233
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
Only humans shed emotional tears.
331
It takes approximately 12 hours for food to entirely digest.
93
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
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