#8 – Mastiff
Mastiff breed is probably one of the oldest dog breeds in the world. They are also among the most expensive dog breeds because they are rare to find.
Mastiffs are ideal family dogs and they are known for their affectionate and loving nature. This dog is very dignified and doesn’t get easily startled. Despite the impressive physique of this breed, they are actually very passive and they like to spend time inside the house.