The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Sloths take two weeks to digest their food.
243
Cows can sleep standing up, but they can only dream lying down.
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