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
GNU Zebra Infusion company and market a commercial version of Zebra, known as "ZebOS". This ZebOS is being used in networking products, such as FortiOS and the Citrix NetScaler. The official website states that "Zebra has been decommissioned". Since its last release (version 0.95) in 2005-09-08, development of Zebra appears to have stopped. A new project has emerged as the unofficial successor of Zebra: Quagga. Worldwide, many Linux/BSD based BGP-routers which were using Zebra are switching to Quagga. GNU Zebra Zebra is a routing software package that provides TCP/IP based routing services with routing protocols support such as RIP, OSPF and BGP.