Zebra herbs, twigs, leaves and bark. Their digestive systems allow them to subsist on diets of lower nutritional quality than that necessary for other herbivores. Female zebras mature earlier than the males, and a mare may have her first foal by the age of three. Males are not able to breed until the age of five or six. Mares may give birth to one foal every twelve months. She nurses the foal for up to a year. Like horses, zebras are able to stand, walk and suckle shortly after they are born. A zebra foal is brown and white instead of
Ice Station Zebra the International Geophysical Year (IGY.). Footage from "Ice Station Zebra" (and the model of the "Tigerfish") was also re-used in "The Six Million Dollar Man" two-part episode "Wine, Women, and War," the 1978 disaster film "Gray Lady Down", the 1983 James Bond film "Never Say Never Again", and the 1982 Cold War thriller "Firefox". Sportscaster Chris Berman, known for his whimsical nicknames for athletes, referred to major league pitcher Bob Sebra as "Ice Station Sebra". In "Breaking Bad", Saul Goodman has a holding company called Ice Station Zebra Associates, which he uses to dodge taxes. It is revealed in the