Horse breed been produced. Such restrictions have led to legal challenges in the United States, sometime based on state law and sometimes based on antitrust laws. Horses can crossbreed with other equine species to produce hybrids. These hybrid types are not breeds, but they resemble breeds in that crosses between certain horse breeds and other equine species produce characteristic offspring. The most common hybrid is the mule, a cross between a "jack" (male donkey) and a mare. A related hybrid, the hinny, is a cross between a stallion and a jenny (female donkey). Most other hybrids involve the zebra (see Zebroid). With
When a white horse is not a horse term" and "shi" "solid; true, actual; fact, reality", and abstract "zhi" "finger; pointing; designation; universal" like "whiteness" and concrete "wu" "thing; object; particular" like a "white horse". The Chinese of "a white horse is not a horse" is "bai ma fei ma" 白馬非馬, whose meaning hinges upon the negative "fei" "not, is not; no, negative; oppose; wrong". The Classical construction "A "fei" B" "A非B" can ambiguously mean either "A is not a member of the class B" or "A is not identical to B". Interpreting this equivocation fallacy, A.C. Graham says this "white horse" vs. "horse" paradox plays upon the