Bats sleep 18-20 hours per day.
5
Cows can sleep standing up, but they can only dream lying down.
745
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
Dogs have been man's pet for over 14,000 years.
224
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12