DALLAS, Feb. 14 (UPI) -- Officials at the Dallas Zoo say they still are unclear how a 180-pound gorilla managed to temporarily escape from its enclosure.
Tufani the gorilla was first seen on top of her cage Saturday morning and within the hour, the 19-year-old animal was tranquilized and returned to its 40-foot-by-50-foot enclosure, The Dallas Morning News reported Sunday.