For my personal knowledge, does someone could tell me what is the approximate population of golden-bellied mangabey in America, or at least which zoos have them?
I believe there is still a pair living in Cleveland, they might be the last ones (if they're alive). San Antonio had them as recently as 2018, but I can't find any more recent references to them. They were a source of GBMs for Europe in the past: Four monkeys from San Antonio Zoo shipped to Europe