Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Denmark has twice as many pigs as there are people.
66
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
Female kangaroos have three vaginas.
2