The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
The elephant brain weighs about 6,000g.
274
The seahorse is the only fish to have a neck.
12
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
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17