Watch related coverage: CMZoo welcomes new giraffe to herd (COLORADO SPRINGS) — Cheyenne Mountain Zoo (CMZoo) is mourning the passing of its 6-year-old moose, Atka, who passed away on Tuesday, Sept. 22 following a procedure that required anesthesia. Many may know Atka as the moose who was missing a toe after having it removed for [...] ...read more read less