BROOKFIELD, Illinois -- The Brookfield Zoo has welcomed five new Mexican gray wolf puppies.
Five-year-old Zana gave birth to a litter of five pups on April 22. The zoo participates in "cross-fostering," which is the transfer of young pups from one litter to another litter of a similar age.
In this case, two pups from Zana's litter were placed in a wild pack from New Mexico, and two wild-born puppies were placed in the zoo's pack.
The pups - one female and four males - are expected to emerge from their den in the next few weeks, zoo officials said.
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