Webster's Third New International Dictionary of the English Language, Unabridged. The Merriam-Webster Editorial Staff. Springfield, MA U.S.A.: G&C Merriam Company. 1967. p. 274. A breed is a group of domestic animals related through common ancestors and visibly similar in most characteristics, having been differentiated from others by human influence; a distinctive group of domesticated animals differentiated from the wild type under the influence of man, the sum of the progeny of a known and designated foundation stock without admixture of other blood.
"Opinion 2027 (Case 3010)". Bulletin of Zoological Nomenclature. International Trust for Zoological Nomenclature. 60 (Part 1). "Opinions" section. ngày 31 tháng 3 năm 2003. Archived from the original on ngày 17 tháng 5 năm 2008. Truy cập 2011-11-18. The majority of wild progenitors and their domestic derivatives share the same name, but in the 17 cases considered...[including Felis silvestris] the wild and domestic forms have been separately named and this has created confusion.
