Are Wild Jaguars Moving Back Into the U.S.?

In southern Arizona, just north of the U.S.-Mexico border, a heat- sensitive remote surveillance camera was recently triggered by a warm body. But it wasn’t an illegal immigrant in search of a job, or a courier in the drug trade. It was a jaguar (Panthera onca).

The photograph, taken on August 7, represents the second time in three years that the big cat has been imaged in the U.S. and it raises an intriguing question: Are jaguars seeking U.S. residency?