The Phoenix Zoo is asking the public to help name one of its black-footed ferret litters. The zoo is caring for 27 black-footed ferret kits and officials say it’s the most successful breeding season in 20 years. The first litter was born in May, the last in June. The Phoenix Zoo is one of six facilities worldwide breeding black-footed ferrets for release to the wild. The species is considered one of North America’s most endangered. The zoo has produced over 500 black-footed ferrets in 30 years of involvement with the breeding program, with many released into the wild in Arizona and other parts of their native range.