The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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The Basenji dog is the only dog that is not able to bark.
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There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
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Alligators can live up to 100 years.
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A puppy is born blind, deaf, and toothless.
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Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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Cats sleep for 70% of their lives.
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