Other trained animals included monkeys, Indian elephants, camels, horses, zebus, and wolfdogs. XCELLSiS ZEbus (a New Flyer F40LF with a Ballard fuel cell) in November 1999. Both taurine cattle and indicine cattle (zebus) are descended from the aurochs. "Zebu" may be either singular or plural, but "zebus" is also an acceptable plural form. It is widely eaten by free-ranging zebus, and its seeds grow easily in zebu feces.