A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The most expensive cow in the world was sold in 2009 for $1.2 million.
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Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
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
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2