FERAL SWINE POPULATIONS
In the 1500s, European settlers brought pigs to North America as travelling food; more than 6 million feral swine now occupy at least 35 states
In 1958, an American ornithologist found pigs devastating a remote Pacific atoll and the removal of 58 pigs was followed by a seabird increase from 650 to 137,000
Incurable 'Zombie Deer' disease may infect humans: All you need to know about this terrifying illness with no vaccine or treatment
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