The Basenji dog is the only dog that is not able to bark.
4
When cats are happy, they may squeeze their eyes shut.
10
There's a lizard known as the 'Jesus Lizard' that can run across water.
11
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Nicole Kidman is scared of butterflies.
65
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492