Mexican Gray Wolf (Canis lupus baileyi)
320 (60 wild, 260 captive).
Image: Joel Sartore/National Geographic [larger view].
The photographer writes;
Still on shaky ground, the Mexican gray wolf, an endangered subspecies, is slowly increasing in number in Arizona and New Mexico thanks to captive breeding.
Joel Sartore has shared some of his work on this blog before, so I am thrilled to tell you that National Geographic also appreciates his exemplary work. You can view more endangered animals of the United States that were photographed by the talented Joel Sartore here at National Geographic online. All images appear here by permission of National Geographic online.