Female kangaroos have three vaginas.
2
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12