The Norwegian Lundehund is a small, rectangular Spitz type dog. The Lundehund has a great range of motion in its joints, allowing it to fit into and extricate itself from narrow passages. Dogs of this breed are able to bend their head backwards along their own spine and turn their forelegs to the side at a 90-degree horizontal angle to their body, much like human arms. Their pricked, upright ears can be folded shut to form a near-tight seal by folding forward or backward.