How adorable are these two twin boys?! The very rare Peninsular pronghorn duo is only the second set born in the U.S. ever (remember the first set here). Not only do they have super big ears, they also have super speedy feet – pronghorns are the second fastest animal on Earth – next to the African cheetahs – in short distance running. Within 30 minutes of birth, babes are already taking first steps and, within four days, these antelopes can outrun humans. What's next? Adults can run up to 70 miles-per-hour and maintain a speed of 40 to 60 mph without showing any signs of distress for over an hour. Whoa!
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