Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Only humans shed emotional tears.
331
Human hair and fingernails continue to grow after death.
7
If your DNA was stretched out it would reach to the moon 6,000 times.
256
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
The human brain is more active during sleep than during the day.
28