Rattlesnake mating sessions have been known to last more than 22 hours.
232
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Nicole Kidman is scared of butterflies.
65
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The cat brain weighs about 30g.
167