Zebra It is an inhabitant of the semi-arid grasslands of Ethiopia and northern Kenya. Grévy's zebra is the rarest species, and is classified as endangered. Although zebra species may have overlapping ranges, they do not interbreed. In captivity, plains zebras have been crossed with mountain zebras. The hybrid foals lacked a dewlap and resembled the plains zebra apart from their larger ears and their hindquarters pattern. Attempts to breed a Grévy's zebra stallion to mountain zebra mares resulted in a high rate of miscarriage. In captivity, crosses between zebras and other (non-zebra) equines have produced several distinct hybrids, including the zebroid,
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.