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,
Donkey Punch (pornographic film) Donkey Punch (pornographic film) Donkey Punch is a 2005 American pornographic film directed by Grip Johnson and starring Deja Dare, Rachel Luv, Alex Divine, and Haley Scott. "Donkey Punch" is divided into four scenes that are each roughly thirty minutes in length and which consist of vaginal and anal intercourse, as well as acts such as irrumatio, cunnilingus, anilingus, and penetration with fingers and toes. Throughout each sequence, the male performers slap, punch, gag, kick, stomp, strangle, yell at, pull the hair of, and spit on their female co-stars. The segments conclude with the actor ejaculating into the actress's anus