An English Toy Terrier (Black and Tan) is a small breed of terrier in the toy group. While the name is sometimes used synonymously with that of the Toy Manchester Terrier, these are actually separate breeds.
The breed standards for the English Toy Terrier and the Toy Manchester Terrier (which was developed in the United States) are very similar, but there are subtle differences. One evident one is that the English Toy Terrier must exhibit æcandle flameÆ ears. Further, the breed standard of the English Toy Terrier is often interpreted to describe a lighter, finer dog than the type acceptable under the Toy Manchester Terrier breed standard.
Because the English Toy Terrier is facing extinction, the Kennel Club (UK) has opened its Stub Book to allow Toy Manchester Terriers which fit the breed standard of the English Toy Terrier to be transferred to English Toy Terrier breed clubs. Many owners in Great Britain are against this decision; others see it as the only way to preserve the breed.
Courtesy of: The Free Dictionary