What is a black and brown dachshund called?

There isn't a specific name for a black and brown dachshund.

Dachshunds are primarily described by their coat color and pattern:

* Black and Tan: This is the most common term for a dachshund with a black body and tan markings on the legs, chest, face, and eyebrows.

* Chocolate and Tan: This is similar to black and tan, but with a chocolate brown body instead of black.

So, a black and brown dachshund would likely be referred to as a black and tan or a chocolate and tan.