Cats and dogs can hear ultrasound.
350
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212