I'm not sure that it's true that they are more prone to biting. I think people make excuses because the "breed" is like that. It may be that the dachshund and other ground hunting dogs such as terriers used for hunting vermin and other aggessive ground prey are more dominant and require much more discipline to keep them from becoming dominant aggressive (true of many of the pit breeds) but it's not any different from any breed that has a dog that's dominant. I can show you a thousand breeds and if you have a dominant dog that is not curtailed, they will all show similar instances of imbalance including biting. Herding dogs will also bite if not kept from their "norma" behaviors...aka...herding. You have to channel that behavior in a more positive way. I've seen way too many dogs that are labeled as "aggressive breeds" when really they are a dominant breed. If you can control the dominance, aggression towards a person would never become an issue. Large or small...it's all about who's the boss and who ain't! I'm currently fostering a pit mix and a boxer mix that were rescues. Both have the potential to be dominant aggressive dogs. They are not allowed to show that behavior in my home though. Either with us or our other dogs. As a result....they are submissive, calm loving dogs. No biting on any one. They do tend to bully each other when they play, but even that is corrected if it gets out of hand.