She's a purebred Dachshund, and the long-haired coat type is recognized by the AKC's breed standards. There are Dachshund/Golden Retriever crosses, though! Sidney and his standard coat somehow ...
The Border Collie-Dachshund is a mixed breed dog from two purebred parents, the Dachshund and the Border Collie. This adorable cross is called a Weiner Dog-Border Collie mix or a Border Weenie.
Frenchies are followed by Labrador retrievers, golden retrievers, German shepherds, poodles and some other longtime faves.