As the rising sun danced across Florida's coastal waters, government workers in shorts and T-shirts knelt in a grassy island field and plucked wriggling rats from traps laid the night before. These weren't just any rats. They were 3-pound, 35-inch-long African behemoths. They squirmed as the workers, wearing protective gloves, removed green radio collars that had been tracking the rodents' movements. All 18 of the animals were carted away for research.
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