Mosquitoes don't just bite you, they also pee on you.
11
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Your heart will pump about 212 million liters in its lifetime.
26
10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
108
Lobsters have blue blood.
476
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
476
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92