Dogs have been selectively bred for thousands of years, sometimes by inbreeding dogs from the same ancestral lines, while at other times by mixing dogs from very different lines. The process continues today, resulting in a widening in appearance without speciation, "from the Chihuahua to the Great Dane".
Dog breeds are typically divided into a few basic categories: companion dogs, guard dogs, hunting dogs, herding dogs and working dogs. The top dog breeds for every purpose are represented here. Despite the names, in contemporary America, most breeds - even hunting or herding dogs - service as companies for individuals and families.
Retriever (Labrador) - The Labrador Retriever, or just Labrador, is a type of retriever-gun dog. The Labrador is one of the most popular breeds of dog in Canada , the United Kingdom and the United States. A favourite disability assistance breed in many countries, Labradors are frequently trained to aid the blind, those who have autism, to act as a therapy dog, or to perform screening and detection work for law enforcement and other official agencies. Additionally, they are prized as sporting and hunting dogs.
German Shepherd - The German Shepherd is a relatively new breed of dog, with their origin dating to 1899. As part of the Herding Group, German Shepherds are working dogs developed originally for herding sheep. Since that time however, because of their strength, intelligence, trainability, and obedience, German Shepherds around the world are often the preferred breed for many types of work, including disability assistance, search-and-rescue, police and military roles, and acting.
Golden Retriever - The breed is a prominent participant in conformation shows for purebred dogs. The Golden Retriever is popular as a disability assistance dog, such as being a guide dog for the blind and a hearing dog for the deaf. In addition, they are trained to be a hunting dog, a detection dog, and a search and rescue participant. The breed's friendly, gentle temperament means it is unsuited to being a professional guard dog, but its temperament has also made it the third-most popular family dog breed.
French Bulldog - The French Bulldog, like many other companion dog breeds, requires close contact with humans. As a result, they should not be left alone for more than a few hours because these dogs experience separation anxiety if they are alone for too long. This is especially important when French Bulldogs are young, but this issue remains a concern into adulthood. Being alone for too long can cause a French Bulldog to behave in a destructive manner, which can include chewing on household items or furniture or even going to the bathroom in the house.
Bulldog - According to the American Kennel Club (AKC), a Bulldog's disposition should be "equable and kind, resolute, and courageous (not vicious or aggressive), and demeanor should be pacific and dignified. These attributes should be countenanced by the expression and behavior". Breeders have worked to reduce/remove aggression from these dogs. Most have a friendly, patient, but stubborn nature. Bulldogs are recognized as excellent family pets because of their tendency to form strong bonds with children. Generally, Bulldogs are known for getting along well with children, other dogs, and other pets.
Beagle - The beagle is a breed of small hound that is similar in appearance to the much larger foxhound. The beagle is a scent hound, developed primarily for hunting hare (beagling). With a great sense of smell and superior tracking instinct, the beagle is employed as detection dog for prohibited agricultural imports and foodstuffs in quarantine around the world. The beagle is intelligent but single-minded. It is a popular pet due to its size, good temper, and lack of inherited health problems.
Poodle - Poodles are known as a highly intelligent, energetic, and sociable breed. They require both physical and intellectual activities. Of note is this breed's keen sense for instinctive behavior. In particular, marking and hunting drives are more readily observable in poodles than in most other breeds. A typical poodle should be reserved with strangers upon first introduction, but after a while should slowly reveal a warm and personable disposition. Snappy, vicious behavior is considered a serious fault in the breed. Poodles are highly trainable dogs that typically excel in obedience training. A poodle will do well at many dog sports, including dog agility, flyball, dock diving, field tracking, and even schutzhund, and can follow owners on hiking trips or any trip involving swimming, as long as the dog is accustomed to water and swimming.
Rottweiler - Rottweiler is a calm, confident and courageous dog with a self-assured aloofness that does not lend itself to immediate and indiscriminate friendships. A Rottweiler is self-confident and responds quietly and with a wait-and-see attitude to influences in its environment. It has an inherent desire to protect home and family, and is an intelligent dog of extreme hardness and adaptability with a strong willingness to work, making them especially suited as a companion, guardian and general all-purpose dog.
Yorkshire Terrier - The ideal Yorkshire Terrier character or "personality" is described with a "carriage very upright feisty" and "conveying an important air".Though small, the Yorkshire Terrier is active, very overprotective, curious and fond of attention. Mentally sound and emotionally secure ones should normally not show the soft submissive temperament seen in lap dogs although many exhibit this behaviour due to improper training. Because of this, it is advised that a Yorkie would not be suitable for a home with typical young children. Instead, they make ideal companions for older families with many more reputable breeders routinely only homing to families with children older than about 10 years for the comfort of the dog, but more so for the benefit of the child.
Boxer - The character of the Boxer is of the greatest importance and demands the most solicitous attention. He is renowned from olden times for his great love and faithfulness to his master and household. He is harmless in the family, but can be distrustful of strangers, bright and friendly of temperament at play, but brave and determined when aroused. His intelligence and willing tractability, his modesty and cleanliness make him a highly desirable family dog and cheerful companion. He is the soul of honesty and loyalty, and is never false or treacherous even in his old age.