Mason's World Dictionary of Livestock Breeds, Types and Varieties, now in its sixth edition, has a long history as a reliable and authoritative source of key livestock breed information. Intended as a list of livestock names and synonyms for breeds, groups, types and varieties worldwide, the dictionary aims to include all names found in the literature, 'defining' each breed or type with a brief indication of identifying characteristics, uses and source of origin. Expanded into a new edition, this established and trusted resource:Extends coverage to include yak and camelids in addition to the existing cattle, sheep, pigs, goats, horses, asses and water buffalo.Features well over 10,000 entries and cross-references on breeds, sub-breeds, types, varieties, strains and lines of species.Covers newly created and now-recognised local breeds documented over the past two decades.An important updated work, Mason's Dictionary forms a useful reference for livestock breeders and academics interested in breeds, as well as national and international organizations with interests in livestock.