Cows can sleep standing up, but they can only dream lying down.
745
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
The head of a jellyfish is called the "Bell."
6
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6