Denmark has twice as many pigs as there are people.
66
The cat brain weighs about 30g.
167
A lion in the wild usually makes no more than twenty kills a year.
186
The octopus does not have a blind spot.
273
A domestic cat can sprint at about 31 miles per hour.
274
Dogs have been man's pet for over 14,000 years.
224
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10