Early American humans hunted car-size armadillos and used their shells for houses.
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Dogs have been man's pet for over 14,000 years.
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Lurch, a Watusi bull, had the largest horns in the world.
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
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Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
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