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
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Your heart will pump about 212 million liters in its lifetime.
26
Lobsters have blue blood.
476
Consumption of TNT turns urine amber or deep red, which people often mistake for blood.
301
Mosquitoes don't just bite you, they also pee on you.
11
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217