A sea squirt digests its own brain. It spends the early portion of its life as tadpole-like creature. It then permanently attaches itself to the ocean floor. Since it is stationary from this point on, it has no use for its brain

Giraffes and humans have the same number of bones in their neck

Hippopotamuses kill more people each year than lions, leopards, and elephants combined

Some species of parrots can live for over 90 years

The Stegosaurus dinosaur measured up to 30 feet (9.1 meters) long but had a brain the size of a walnut