The octopus does not have a blind spot.
273
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
Domestic pigs average a top speed of about 11 miles per hour.
182
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
A lion in the wild usually makes no more than twenty kills a year.
186
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
A 42-foot sperm whale has about 7 tons of oil in it.
209