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,
Hyundai Equus Tau 5.0 GDi (416PS) engines. All models have an 8-speed automatic transmission. 2016 is the last model year for both the Hyundai Equus and Genesis due to the beginning of the new Genesis division being added for the Hyundai Motor Company and its models the Genesis G80 and G90 which will replace the Hyundai Genesis and Equus. In 2017, the Equus was replaced by the Genesis G90 with a brand new platform under the Genesis brand, under the G90 and EQ900 names respectively. Hyundai Equus The Hyundai Equus () is a full-size luxury car produced by the South Korean manufacturer