These are not shrunken versions of Dobermans, but a much older breed. They probably originated from Dachshund stock, perhaps with Italian Greyhound. Recognized in the late 20s in America, the breed was able to survive the horrors of WWI.
This is a dog with more energy than a Lab. If you aren’t ready to give this dog the workout it desires, expect it to act out. They have the independence and stubbornness of the terriers and the easy movement of the Greyhounds. They can be very ‘terrierish’ with other dogs, so a fair amount of socialization is required. These dogs are not equipped for the cold.