CHICAGO — The Brookfield Zoo is helping re-establish the Mexican wolf population in the southwestern US and Mexico.
Six of seven Mexican wolf puppies born at the zoo last month were placed days later in wild dens as part of a federal recovery program.
Seven Mexican wolf puppies were born at Brookfield Zoo on April 27. On May 6, six of the puppies were flown to Arizona to be placed with wild wolf packs as part of the U.S. Fish and Wildlife Services’ Mexican Wolf Recovery Program, which helps enhance the genetic diversity of the overall Mexican wolf population. (CZS-Brookfield Zoo) 
Dr. Lily Parkinson, a clinical veterinarian at Brookfield Zoo, examines a 9-day-old Mexican wolf puppy. The puppy was one of six flown to Arizona to be placed with wild wolf packs as part of the U.S. Fish and Wildlife Services’ Mexican Wolf Recovery Program. (CZS-Brookfield Zoo) 
Dr. Lily Parkinson, a clinical veterinarian at Brookfield Zoo, examines a 9-day-old Mexican wolf puppy. The puppy was one of six flown to Arizona to be placed with wild wolf packs as part of the U.S. Fish and Wildlife Services’ Mexican Wolf Recovery Program. (CZS-Brookfield Zoo) 
A 9-day-old Mexican wolf puppy at Brookfield Zoo during a health exam prior to being flown to Arizona as part of the U.S. Fish and Wildlife Services’ Mexican Wolf Recovery Program. The puppy and five of its siblings are being cross-fostered with wild Mexican wolf packs to help enhance the genetic diversity of the overall Mexican wolf population. Dr. Lily Parkinson, a clinical veterinarian at Brookfield Zoo, examines a 9-day-old Mexican wolf puppy. The puppy was one of six flown to Arizona to be placed with wild wolf packs as part of the U.S. Fish and Wildlife Services’ Mexican Wolf Recovery Program. (CZS-Brookfield Zoo) 
Dr. Lily Parkinson, a clinical veterinarian for the Chicago Zoological Society, weighs a Mexican wolf puppy during a health exam. Seven puppies were born at Brookfield Zoo on April 27, and six of them were flown to Arizona to be cross-fostered with wild Mexican wolf packs as part of the U.S. Fish and Wildlife Services’ Recovery Program to help enhance the genetic diversity of the overall population. Dr. Lily Parkinson, a clinical veterinarian at Brookfield Zoo, examines a 9-day-old Mexican wolf puppy. The puppy was one of six flown to Arizona to be placed with wild wolf packs as part of the U.S. Fish and Wildlife Services’ Mexican Wolf Recovery Program. (CZS-Brookfield Zoo)
Of those six pups, four are males and two are females.
Three were put in a wild pack in Arizona and the other three in new mexico.
The seventh pup will remain at the zoo.
Guests will be able to see the male pup when he emerges from his den in the coming weeks.
