Pit Bull
Origin: US, XIX century
Weight: 55-65 lbs
Height: 18-22 inches
Pit Bull dogs have long been associated with aggression toward humans as well as being thought to cause a high number of canine related deaths over the years. Extensive research has shown recently that this may not be the case at all. If there is any aggression shown toward humans from the Pit Bulls, it is usually due to mishandling and /or mistreatment from their owners. Some Pit Bull owners actually have trained their dogs to be mean.
Pit Bull
Origin: US, XIX century
Weight: 55-65 lbs
Height: 18-22 inches
Pit Bull dogs have long been associated with aggression toward humans as well as being thought to cause a high number of canine related deaths over the years. Extensive research has shown recently that this may not be the case at all. If there is any aggression shown toward humans from the Pit Bulls, it is usually due to mishandling and /or mistreatment from their owners. Some Pit Bull owners actually have trained their dogs to be mean.
The pit bull was bred especially for dog fighting and, sad as it is, they’re still used for this purpose today. A pit bull is a fearless dog that will take on any opponent. They will lock their jaws onto the prey until it’s dead. Pit bulls have a reputation of mauling people to death.
Rottweiler
Origin: Germany, 1820-ies
Weight: 85-110 lbs
Height: 23-27 inches
The Rottweiler is the current “fad” guard/macho dog of the moment. For four years running, it has been the second most-popular AKC registered breed. Don’t be swept up by the hype, or the fact that you neighbor, aunt, sister, or best friend has one. The Rottweiler is a large, powerful dog and along with ownership comes much responsibility. Rottweilers require extensive socialization from an early age. Are you willing to carry your puppy for several months, (he shouldn’t be walking in public places until he is fully immunized at around 16-20 weeks), exposing him to the sights, sounds and people he will encounter as an adult? Because of their size and strength, obedience training for your Rottweiler is a must. Weekly group classes for 6 to 12 months is generally considered a minimum. Rottweilers are “people” dogs.
Rottweilers are powerful dogs with strong jaws, primarily meant to protect. The breed was bred especially for that purpose. They often don’t like strangers and other dogs — they are guards at heart, and the dog owner should always remember that.
German Shepherd
Origin: Germany, XIX century
Weight: 70-85 lbs
Height: 22-26 inches
German shepherds are very beautiful dogs, distinguished from other breeds by their reliable and obedient temper. They are in need of constant and serious physical activity though, and they seem to give preference to long walks and active games.
The German Shepherd dog is one of the most beloved and honored dogs in the world. Though this breed is classified by the American Kennel Club (AKC) in the herding group and began as a herding dog, German Shepherds perform many other jobs today. Because of their inherent courage, work ethic, intelligence, loyalty and overall trainability, German Shepherd dogs are commonly used in police work, as escorts for the blind, and as security for many families and businesses. There is no better protector than a German Shepherd.
Husky
Origin: Siberia, ancient times
Weight: 35-55 lbs
Height: 20-24 inches
Some dog authorities are of the opinion that the Siberian Husky had developed as a purebred dog breed as far back as 3000 years ago through its isolated existence with the Chukchi. Unquestionably there is Northern Wolf blood in the Siberian Husky dog breed mix and for centuries from generation through generation it was customary for the Chukchi people to only breed the very best of lead dogs while neutering the rest to eliminate the reproduction of undesired traits. In this manner the Chukchi not only vastly improved the genetic lineage of the Siberian Husky dog breed but also consolidated its genetic purity as a thoroughbred dog breed.Husky Dogs

The training of a husky is a complicated thing, and this dog is not recommended for beginning dog owners. Initially these dogs were used to transport goods on a sleigh. Not afraid of cold weather, they’re very active and loving dogs. The love to get together with other members of their breed and howl at the moon.
A 2000 study of dog bites resulting in human fatalities in the U.S. found fifteen such fatalities (6% of the total) were caused by “husky-type” dogs between 1979 and 1997.
Alaskan Malamute
Origin: North America, ancient times
Weight: 80-110 lbs
Height: 23-28 inches
The malamute is a friendly dog, but it has rather an independent temper. It’s better to keep this dog in a village, far from the city. Sometimes violent and energetic, they constantly need to move or play. If they are bored, they can become destructive. That’s why this dog needs lots of exercise to be happy. It’s a working breed where the dogs are used to a cold climate, so if you don’t live in the deep north, make your malamute a nice playground as they are always in need of physical activity.

Doberman Pinscher
Origin: Germany, XIX century
Weight: 65-90 lbs
Height: 26-28 inches
Doberman pinschers (often just called dobermans) are dogs that were originally bred to protect and defend. It is important to avoid any type of aggressive play and struggle with these dogs, instead letting the games be guided to develop the doberman’s intelligence. Even though they aren’t small dogs, dobermans can adapt to life in a city and become a perfect companion for the experienced, physically active owner. The typical pet Doberman attacks only if it believes that it, its property, or its family are in danger.

Chow Chow
Origin: China, antiquity
Weight: 40-65 lbs
Height: 18-22 inches
The Chow Chow is an ancient breed from China. It is believed to be one of the oldest of the pure breeds and representations are found in Chinese sculpture dating as far back as 1000 B.C. It may be that he is the origin of many of the Spitz type breeds. The Chow Chow is commonly shortened to just one word, the Chow. He was used in China as a guarding and hunting dog and held in much favor in the Imperial courts. The Chow was a populous breed in China and was also raised as a source of food.
The Chow Chow is shown in the Non Sporting Group in the show ring in the United States. The coat is red, blue, fawn or black, with variations of light and dark in these colors and never with any markings of white. There are two varieties of the coat, the “rough” or long coated and the “smooth” or short coated. Both types of coat are dense and double.
The chow chow is an independent dog often focused only on its own needs. Chow chows need constant physical activity and communication, even if they don’t seem to like being disturbed much.
Chow chows were bred for hunting and helping shepherds.
Presa Canario
Origin: Canary Islands, Africa
Weight: 100-125 lbs
Height: 25-26 inches
The Presa Canario hails from the Canary Islands, where the dogs were trained for hunting and for war. During the 18th century, English traders and merchants came to the Canary Islands, bringing with them their working and gladiator dogs, notably the Mastiff of England and the Bulldog. Englishmen also brought with them their traditions of pit fighting for which their breeds and the island dogs were inevitably mixed and eventually bred to produce the ultimate fighter. Nowadays the breed is used for guarding and the handling and driving of cattle.
The dogs of this breed can be gentle and noble with their families, showing great affection to their owners, and being suspicious of strangers. They are a guardian breed with man-stopping ability, incredible power and a complete lack of fear.
Boxer
Origin: Germany, 1850-ies
Weight: 50-70 lbs
Height: 20-25 inches
Unlike their name suggest, these dogs are not typically aggressive by nature. They are bright, energetic and playful breed. Boxers have been known to be “headstrong”, which makes it a bit difficult to train them but with positive reinforcement techniques, Boxers often respond much better.

Dalmatian
Origin: Balkans, India, Middle Ages
Weight: 40-70 lbs
Height: 20-24 inches
Dalmatians are active and energetic dogs, loving to be outdoors. They are very playful and love running.
There’s still no definite info about what this breed was originally bred for. This is the first dotted breed in Europe, Asia and Africa. They were serving as warriors, hunters, and shepherds before finally becoming the symbol of the English fireman.
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pit bulls was NOT bread for fighting!! this is what iv got off the web and out of my god books! The American pit bull terrier is the product of interbreeding between terriers and a breed of bulldogs to produce a dog that combined the gameness of the terrier with the strength and athleticism of the bulldog.[11] These dogs were initially bred in England, Ireland, and Scotland, and arrived in the United States with immigrants from these countries. In the United States, these dogs were used as catch dogs for semi-wild cattle and hogs, to hunt, to drive livestock, and as family companions[11]. Some have been selectively bred for their fighting prowess.[12] [13]