The Basenji dog is the only dog that is not able to bark.
4
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
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Penguins have a gland above their eye that turns saltwater into freshwater.
12
When the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
25
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
The oldest recorded elephant lived for 82 years.
213
Sheep, goats, octopuses, and toads have rectangular pupils.
7