Mosquitoes don't just bite you, they also pee on you.
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Your body is creating and killing about 2.4 million red blood cells per second.
17
Lobsters have blue blood.
476
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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Consumption of TNT turns urine amber or deep red, which people often mistake for blood.
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20 minutes after smoking a cigarette, blood pressure drops to normal.
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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.
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