12 dog breeds first-time owners should think twice about

2. Bullmastiff

Bullmastiffs are excellent guard dogs who take their jobs seriously. At 100 to 130 pounds, these giants are not exactly gentle with strangers. While loving and affectionate with their families, Bullmastiffs do not like strangers entering their homes and require consistent training and socialization from a young age. The breed is challenging even with obedience training, as they are independent thinkers, which makes them a poor choice for first-time dog owners.

Next:More dog breeds that first time pet owners should never get