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The US Fish and Wildlife Service is required to prepare a revised recovery plan for the Mexican Gray Wolf after delaying the process for over 30 years. Photo/John and Karen Hollingsworth/USFWS

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Part 3 of 3: What a revised recovery plan could mean for Mexican Gray Wolves

GRAND CANYON, Ariz. - In February there were 97 Mexican Gray Wolves in the wild and around 25 in Mexico, making it one of the most endangered mammals in North America. Earthjustice, a nonprofit environmental law organization and other environmental groups say the 34-year-old document does not provide the necessary science-based guidance to move the Mexican Gray Wolf toward recovery.