This Jan. 30, 2016, photo provided by Conservation CATalyst and the Center for Biological Diversity shows a Belgian Malinois, named Mayke walking through the Santa Rita Mountains north of Tucson, Ariz. Mayke has been trained to look for any sign of El Jefe, the only known jaguar living in the United States. (Conservation CATalyst and Center for Biological Diversity via AP) (Conservation CATalyst and Center for Biological Diversity)
This Jan. 30, 2016, photo provided by Conservation CATalyst and the Center for Biological Diversity shows carnivore biologist Chris Bugbee giving a scent of a jaguar to his dog Mayke, a Belgian Malinois, during a walk through the Santa Rita Mountains north of Tucson, Ariz. Mayke has been trained to look for any sign of El Jefe, the only known jaguar living in the United States. (Conservation CATalyst and Center for Biological Diversity via AP) (Conservation CATalyst and Center for Biological Diversity)
This Jan. 30, 2016, photo provided by Conservation CATalyst and the Center for Biological Diversity shows carnivore biologist Chris Bugbee and his dog Mayke walking through the Santa Rita Mountains north of Tucson, Ariz. Mayke is trained to look for any sign of El Jefe, the only known jaguar in the United States. (Conservation CATalyst and Center for Biological Diversity via AP) (Conservation CATalyst and Center for Biological Diversity)
This 2015 photo provided by Conservation CATalyst and the Center for Biological Diversity shows the jaguar known as El Jefe, in Santa Rita Mountains north of Tucson, Ariz. El Jefe is the only known jaguar living in the United States. (Conservation CATalyst and Center for Biological Diversity via AP) (Conservation CATalyst and Center for Biological Diversity)
This Jan. 30, 2016, photo provided by Conservation CATalyst and the Center for Biological Diversity shows a Belgian Malinois, named Mayke walking through the Santa Rita Mountains north of Tucson, Ariz. Mayke has been trained to look for any sign of El Jefe, the only known jaguar living in the United States. (Conservation CATalyst and Center for Biological Diversity via AP) (Conservation CATalyst and Center for Biological Diversity)