The dachshund courage, which serves the breed so well in the field, can be a problem for city dogs. Dachshunds may bark at and even charge other dogs when they are being walked; this trait is especially obvious if two or more dachshunds are walking together (the pack mentality) and if the other dog is a large breed. For this reason, as well as general common sense, dachshunds should always be walked on a leash in cities and towns, and they should always be confined to a securely fenced yard at home. Even the best-trained and most obedient dachshund can bolt into the street suddenly to chase a squirrel or an Akita.