A 42-foot sperm whale has about 7 tons of oil in it.
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Early American humans hunted car-size armadillos and used their shells for houses.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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Rattlesnake mating sessions have been known to last more than 22 hours.
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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.
17
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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