Today I Learned…

As if being bitten by mosquitoes isn’t bad enough, the little buggers regularly pee on us too. Female mosquitoes (the ones that do the biting) suck up so much blood that they swell up to twice their normal size, which makes takeoff a bit problematic. They solve this problem by offloading all unnecessary water and salts from the blood they’ve just eaten, by excreting them as urine.