Robert Bakewell, an 18th-century English farmer, is known to have effectively put selective breeding to use for the first time and it is to him that we owe our knowledge that for a better breed (offspring/progeny), we need to breed two good breeds (parents/antecedents). He continued pure-breeding/inbreeding beef cattle for several generations and developed better-quality beef cattle. Inbreeding remained the prominent form of cattle breeding till the 1950s when the positive effects of crossbreeding of cattle first came to light. Reports based on studies on crossbreeding proved that the mating of two unrelated breeds resulted in the development of a calf with HETEROSIS or Hybrid Vigor. Studies also indicated that the offspring thus resulting surpassed its parents in every respect – in health, in its growth-rate as well as in its ability to produce offsprings. There is no element of doubt that crossbreeding has proved to be a boon for beef cattle breeding. In contrast, it has so far not shown any promises for dairy animal breeding.