The largest of the mastiff breeds, the Tibetan Mastiff are burly mountain dogs known for protecting sheep from lions, tigers, and bears. When not being guard dogs, these pups are pretty big goofballs and typically act aloof, tenacious, and stubborn. They are very fluffy with thick coats, can weigh between 100 and 160 pounds, and grow between 26 and 30 inches.
If the name Leonberger sounds a lot like it has the term lion in it to you, you're right! These pups look like mini lions, with a dark face and a golden or tan mane around their head, and have been bred to resemble the crest of the town they originated in. They can grow to an average of 150 pounds and 30 inches tall.
French Mastiffs are a well-known breed in Europe and North America, and are also referred to as Dogue de Bordeaux. These huge pups may seem intimidating with their muscular bodies, big heads, and powerful bark, but to their owners, they are vigilant and courageous, eager to please and protect their families. French Mastiffs grow to 120 to 140 pounds, with a 24 to 26 height.
Anatolian Shepherds are the biggest breed of sheepdogs in the world, and for good reason. These Turkish breeds were bred to have strong, agile, and muscular bodies that were used to protect sheep in the country from wolves and bears. Now considered a great family pet, Anatolian Shepherds are bold, independent, and proud pups that weigh in at an average of 130 pounds, and grow to 30 inches tall.