The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
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
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Only 3% of bird species have penises.
0
Denmark has twice as many pigs as there are people.
66