A cow gives nearly 200,000 glasses of milk in her lifetime.
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Service dogs are trained to know when they are on duty. When their harness is on, they know they are at work. When you take it off they instantly become playful and energetic.
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Dragonflies have six legs but cannot walk!
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Penguins have a gland above their eye that turns saltwater into freshwater.
12
The heart of a mouse beats 650 times per minute!
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A tuna fish can swim 100 miles in a single day!
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A hedgehog's heart beats 300 times a minute on average!
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