Neapolitan Mastiffs weigh 150lbs (males) and 110lbs (females). These protective dogs have a history of fighting in ancient Rome.
Great Danes weigh between 110-175lbs for females and males, respectively,.
Irish Wolfhounds, weighing up to 120 pounds for males, are bred in Ireland and make great obedience and rescue dogs due to their height.
Tibetan Mastiffs are giant indoor guardians with an active, independent nature. They need exercise in a contained area since they're difficult to call back.
Black Russian Terriers can weigh up to 130 pounds and were bred to patrol the Siberian mountains. They love cold weather and have a massive head.
Anatolian Shepherds weigh 80-120lbs for females and 110-150lbs for males, and stand around 30 inches tall.
Bernese mountain dogs are a Swiss breed that weigh between 70-115 pounds,. They make great family dogs.
Caucasian Shepherds, from Georgia, Russia, are the biggest dogs in the world weighing 99-170lbs, with males being shorter and more muscular.
Leonbergers weigh 90-140lbs for females and 110-170lbs for males. They have a lion-like mane and are used for water rescue, herding.
Boerboels are a breed of dog from South Africa weighing 150-220lbs,. They can be aggressive, so good socialization is necessary.
Saint Bernards are known for alpine rescues but nowadays, they make great family pets with their calm and patient nature,.
English Mastiffs are the biggest dog breed with males weighing 160-230lbs and females weighing 120-170lbs.