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(Runtime 1:03)If you’ve ever tried to lose any body fat, you may have spent some time on the dreaded treadmill. Now, imagine tiny treadmills that are…
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Giant rats sound like something to be scared of, perhaps. But the Point Defiance Zoo & Aquarium in Tacoma, Washington, thinks quite the opposite about the African giant pouched rats it just put on display. The rodents are billed as "hero rats."