St. Bernard
Perhaps, this is one of the most popular dog breeds on the list. They really are massive. Some of them can grow up to 27.5 inches and over 70 kilograms. Sadly though, they have a short life span of only 7 to 10 years. They can be easily trained and are perfect as family companion. They are sweet but very shy to those whom they are not familiar with. They love being cuddled and brought around for a walk.
