Cows can sleep standing up, but they can only dream lying down.
745
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
205
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
Cats sleep for 70% of their lives.
8