Mexican gray wolves

Three of Brookfield Zoo's eight Mexican gray wolves were examined tip to tail by the veterinary staff and consultants for a study of the occurrence of nasal carcinoma in the wolves.

( Chuck Berman, Chicago Tribune / April 24, 2012 )

Three of Brookfield Zoo's eight Mexican gray wolves were examined tip to tail by the veterinary staff and consultants for a study of the occurrence of nasal carcinoma in the wolves.

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