The cat brain weighs about 30g.
167
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
The most expensive cow in the world was sold in 2009 for $1.2 million.
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There are approximately three chickens for every human on Earth.
13
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16