A male horse can be crossed with a female donkey (jenny) to produce a hinny. Namely, in China, in 1981, a hinny mare proved fertile with a donkey sire. The male hinny or mule can and will mate, but the emission is not fertile. His most famous song is "Keep yor feet still Geordie hinny". Pairs of complementary types like the mule and hinny are called reciprocal hybrids. A jenny crossed with a stallion produces a hinny. The hybrid between a stallion and a jenny is a hinny, and is less common. The rarer reverse pairing is sometimes called a hebra, horbra, zebrinny, zebret, or zebra hinny. An 1859 Charles Dickens story identifies the fat rascal with the singing hinny of Northumberland. Hinny Bob, thors bonny wark wi' the convicts an blackies oot here. "Hinny" is a term of endearment in the dialects of the Newcastle area.