12. Staffordshire Bull Terrier
Staffordshire Bull Terrier is one of the least understood breeds in the world. They are accused of being extremely violent and aggressive without being provoked, but in reality they are very faithful and devoted dogs that only need long walks to release their energy. These medium-sized beauties are purchased for approximately $1500 and live from 12 to 14 years. Health costs are median, about $3500, taking into account general health issues.