Mastiffs are one of the largest dogs, with males reaching 160-230 pounds. Their sheer size is imposing but they have a docile nature.
Saint Bernards are gentle giants, with mature males weighing 140-180 pounds. They have a patient, friendly temperament.
Great Danes are tall, long-legged dogs. Male adults average 120-200 pounds owing to their large, powerful frame.
Great Pyrenees males can grow to 100-160 pounds. They are calm, gentle giants famous for guarding livestock.
Irish Wolfhounds are bred for hunting and can reach 150 pounds. Despite their size, they are docile and sweet-natured.
Scottish Deerhounds are one of the tallest breeds. Males weigh 85-110 pounds and stand over 30 inches tall.
The Leonberger has a lion-like mane and weighs up to 170 pounds. They are loyal, lively family dogs.