Gorillas can catch human colds and other illnesses.
205
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
The average sperm cell swims at 8 inches per hour.
4
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
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Our brains have a negativity bias and will remember bad memories more than good ones.
15