I don't know about the Columbus Zoo, but I do know a little about the Cincinnati Zoo's offsite breeding center. I know for sure that the zoo's herd of Giant Eland is located here now, I know they breed their Cheetahs here as well, and last I heard they have some Central Chinese Goral here as well. I know previously the Red Crowned Cranes were held here before they were put out on their new exhibit a few years ago. I've also heard something about zebras here as well. Whether they have a seperate herd of Grevy's Zebras living here, the Grevy's Zebras on exhibit now lived there before they were put on exhibit, or if the zoo's Damara Zebras live here now that they've left the zoo, I don't know. There are probably more species but I just don't know about them. They probably breed some of their small cats here as well. I've heard that the breeding center is very close to where I live but I haven't been able to find it. The zoo does this mainly to well, breed their shyer, endangered species that they don't use AI for, and they use it as a holding facility, as the zoo has limited space. The Giant Elands are one of the best examples of this. They have lived at the offsite center ever since they were taken off exhibit. When the zoo's new African Savannah exhibit is built, they will return to the zoo. Other than that I don't know much about it.