Horse outward similarity is an unreliable measure of relatedness. Besides the horse, there are six other species of genus "Equus" in the Equidae family. These are the ass or donkey, "Equus asinus"; the mountain zebra, "Equus zebra"; plains zebra, "Equus quagga"; Grévy's zebra, "Equus grevyi"; the kiang, "Equus kiang"; and the onager, "Equus hemionus". Horses can crossbreed with other members of their genus. The most common hybrid is the mule, a cross between a "jack" (male donkey) and a mare. A related hybrid, a hinny, is a cross between a stallion and a jenny (female donkey). Other hybrids include the zorse,
Equus Bass 770 rear. The Bass 770 uses many systems to keep maintain stability while being driven, these being Magnetic Selective Ride Control, Performance Traction Management, an Active Handling System with traction control and variable-ratio power steering. This car has made an appearance in the mobile phone video game Asphalt Street Storm Racing and a modified offroad version has also made its appearance in Asphalt Xtreme. Equus Bass 770 The Equus Bass 770 (stylized EQUUS BASS 770) is a handcrafted American luxury muscle car manufactured by the company Equus Automotive. Six models can be chosen, these being Accent, Accent Plus, Design, Design Plus,