27: SAINT BERNARD

Most Saint Bernard’s are known for being the animals that were once used in Alpine rescues. These days, this humongous dog is quite a handful to keep as a pet. This breed can they reach up to 260 pounds in weight and 35 inches in height. Although they can be very friendly and adoring to their owners, they are also known for excessive slobbering and shedding. As far as aggression goes, Saint Bernard’s can become quite destructive and stubborn, especially when left alone for too long or when they lack fraternization with other dogs and humans.