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August 21, 2019 - The Washington Post

The dog is one of the world’s most destructive mammals. Brazil proves it.

The dog is one of the world’s most destructive mammals. Brazil proves it.

Government biologist Katyucha Silva was thinking about dogs. What were they doing to Brazil?

It’s a question more researchers are beginning to ask in a country where there are more dogs than children — and where dogs are quickly becoming the most destructive predator. They’re invading nature preserves and national parks. They’re forming packs, some 15 dogs strong, and are hunting wild prey.

“It’s a difficult thing for people to hear,” said Isadora Lessa, a Rio de Janeiro biologist who wrote her doctoral dissertation on domestic dogs causing environmental mayhem. “They love dogs too much.”

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