This thread is about pure subspecies of common chimpanzees in zoos. Chimps are zoo staples and receive less interest than gorillas and orangutans. However, chimps may well become critically endangered soon. Zoos normally mixed chimps from different parts of Africa. Now there is a breeding program for Western chimpanzees verus. Chimpanzees of proven Central troglodytes and Eastern schweinfurthii forms are very rare in Europe. All seem to be non-breeders or integrated in social groups with generic chimps. Is there a chance for Central and Eastern chimpanzee subspecies in zoos? Are other regions more successful in breeding? Are there any purebred groups in medical instituions? Any zoo keeps the most endangered Nigeria-Cameroon chimpanzee ellotti / vellerosus?