There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23