Mosquitoes don't just bite you, they also pee on you.
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Your heart will pump about 212 million liters in its lifetime.
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It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
20 minutes after smoking a cigarette, blood pressure drops to normal.
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Lobsters have blue blood.
476
10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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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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