George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
7
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
The most expensive cow in the world was sold in 2009 for $1.2 million.
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