The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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Female kangaroos have three vaginas.
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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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.
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A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
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