Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
When dragonflies mate, their tails form a love heart.
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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
Denmark has twice as many pigs as there are people.
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