A Great Dane is truly a great dog breed — large and noble, commonly referred to as a gentle giant or as the “Apollo of dogs.” Apollo is the Greek god of the sun, the brightest fixture in the sky.
The greatest weight ever recorded for a dog, 343 pounds (155.6 kg), was that of an English Mastiff from England named Aicama Zorba of La Susa, although claims of larger dogs, including Saint Bernards, Tibetan Mastiffs, and Caucasian ovcharkas exist.
Today the Scottish Deerhound is still a fairly uncommon breed, appreciated by those who love sighthounds or have an interest because of their Scottish heritage, but more are coming to learn that this is a versatile breed and an all-around exceptional dog.
The Dogue de Bordeaux is an immensely powerful mastiff-type guardian. Males can go 27 inches high and 110 pounds. The short, eye-catching coat is a richly colored fawn. The massive head features a Bulldog-like undershot jaw, expressive eyes, and a deeply furrowed brow. It is, proportionately, the largest head in the canine kingdom.
#2 – Newfoundland. What looks like a large teddy bear is a dog called a Newfoundland. The heaviest recorded Newfoundland was 260lbs. and over 6 feet long! That’s quite a gentle giant! #3 – Neapolitan Mastiff. Neapolitan Mastiffs are very large dogs in the 170-200lb. range.
The St. Bernard or St Bernard (/ ˈ b ɜːr n ər d / or / b ər ˈ n ɑːr d /) is a breed of very large working dog from the western Alps. They were originally bred for rescue at the Great St Bernard Pass on the Italian-Swiss border, and Little St Bernard Pass in the Italian-French border, located close to one another.
Some dogs may attack or try to dominate other dogs even if they're love-bugs with people; others would rather play than fight; and some will turn tail and run. Breed isn't the only factor; dogs who lived with their littermates and mother until at least 6 to 8 weeks of age, and who spent lots of time playing with other dogs during puppyhood, are more likely to have good canine social skills.