When President Nixon signed the Endangered Species Act into law 50 years ago, one of the first on the endangered list was the black-footed ferret, North America’s rarest animal. Once thought to be ...

Scientists believe there are only a few hundred black-footed ferrets still living in the Western United States. The carnivores once thrived on the plains between Canada and Mexico, eating prairie dogs ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American One study found that dogs are more likely to ...