Hybrid (biology) are the mule, a cross between a female horse and a male donkey, and the hinny, a cross between a female donkey and a male horse. Pairs of complementary types like the mule and hinny are called reciprocal hybrids. Among many other mammal crosses are hybrid camels, crosses between a bactrian camel and a dromedary. The first known instance of hybrid speciation in marine mammals was discovered in 2014. The clymene dolphin ("Stenella clymene") is a hybrid of two Atlantic species, the spinner and striped dolphins. Cagebird breeders sometimes breed bird hybrids known as mules between species of finch, such
When a white horse is not a horse acknowledge the age of an old man? And what is it which is called righteousness? The fact of a man's being old? Or the fact of our giving honour to his age?' Other early "A white horse is not a horse" references are found in the "Hanfeizi" (32), "Mozi" (11B), and "Zhanguoce" (4). When a white horse is not a horse When A White Horse Is Not A Horse (), also known as the White Horse Dialogue (), is a famous paradox in Chinese philosophy. Gongsun Long wrote this circa 300 BC dialectic analysis of the question 'Is "white horse