5. Dachshund
Dachshunds are perfect watchdogs. Their mission is to exterminate various vermin. The breed feels attached to its owners. Despite the fact that this dog is friendly to its family, it might be rather aggressive around unfamiliar people, kids included. Because of its body structure the Dachshund is prone to spinal cord issues and obesity. To prevent health problems you will be required to walk your pet more often.