Pure breed bulldog puppies can cost thousands of pounds.

While rare varieties are undoubtedly fashionable, there's a serious purpose to keeping pure breeds.

Hens come as hybrids or pure breeds.

He was interested in pure breeds not for their economic value but for his experiments in genetics.

Pure breeds have been, for the most part, artificially created from random-bred populations by human selective breeding with the purpose of enhancing desired physical, behavioral, or temperamental characteristics.