The most expensive cow in the world was sold in 2009 for $1.2 million.
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Penguins have a gland above their eye that turns saltwater into freshwater.
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There's a rare breed of pig that looks like a sheep.
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A 42-foot sperm whale has about 7 tons of oil in it.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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