Only 3% of bird species have penises.
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Dogs have been man's pet for over 14,000 years.
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There's a lizard known as the 'Jesus Lizard' that can run across water.
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Domestic pigs average a top speed of about 11 miles per hour.
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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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By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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