Beagle
The Beagle is a breed of small to medium-sized dog. A member of the hound group, it is similar in appearance to the foxhound, but smaller with shorter legs and longer, softer ears. Beagles are scent hounds, developed primarily for tracking hare, rabbit, deer, and other small game. They have a great sense of smell and tracking instinct that sees them employed as detection dogs for prohibited agricultural imports and foodstuffs in quarantine around the world. Beagles are intelligent but single-minded, and popular pets because of their size, even temper, and lack of inherited health problems.

Chihuahua
The Chihuahua is the smallest breed of dog and is named for the state of Chihuahua in Mexico. Chihuahuas come in a wide variety of sizes, head shapes, colors, and coat lengths. The Chihuahua’s history is puzzling and there are many theories surrounding the origin of the breed. Both folklore and archaeological finds show that the breed originated in Mexico. The most common and most likely theory is that Chihuahuas are descended from the Techichi, a companion dog favored by the Toltec civilization in Mexico.No records of the Techichi are available prior to the 9th century, although dog pots from Colima, Mexico, buried as part of the western Mexico shaft tomb tradition which date back to 300 BC are thought to depict Techichis.

Doberman Pinscher
The Doberman Pinscher (alternatively spelled Dobermann in many countries) or simply Doberman, is a medium-large breed of domestic dog originally developed around 1890 by Karl Friedrich Louis Dobermann, a tax collector from Germany. The Doberman is descended from many different breeds, including the Great Dane, the Greyhound, the German Shorthaired Pointer, the Rottweiler, and others (see History below). Except in the albino color, in which it is extremely difficult to see, each purebred Doberman has markings on the chest, paws/legs, muzzle, above the eyes, and underneath the tail. They are powerful in the hindquarters and can sometimes be top-heavy because of their deep chest (see Appearance below). Nevertheless, the Doberman is traditionally a very athletic breed and many excel in agility and obedience trials. The muzzle is long, and so affords the leverage for an extremely strong bite.

German Shepherd

The German Shepherd is a breed of large-sized working dog that originated in Germany. The breeds officially recognized name is German Shepherd Dog in the English language, sometimes abbreviated as "GSD", and was also formerly known as the Alsatian and Alsatian Wolf Dog in Britain. 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 assistance, search-and-rescue, police and military roles, and even acting.

Golden Retriever
The Golden Retriever is a large-sized breed of dog bred as gun dogs to retrieve shot waterfowl such as ducks and upland game birds during hunting and shooting parties,and were named ´retriever´ because of their ability to retrieve shot game undamaged. Golden Retrievers have an instinctive love of water, and are easy to train to basic or advanced obedience standards. They are a long-coated breed, with a dense inner coat that provides them with adequate warmth in the outdoors, and an outer coat that lies flat against their bodies and repels water. Golden Retrievers are well suited to residency in suburban or country environments. Although they need substantial outdoor exercise, they should be housed in a fenced area because of their instinctual tendency to roam. They shed copiously, particularly at the change of seasons, and require fairly regular grooming.

Great Dane
The Great Dane is a large German breed of domestic dog (Canis lupus familiaris) known for its enormous body and great height. The German name of the breed is Deutsche Dogge, which means German mastiff.

Labrador

The Labrador Retriever, also known as simply Labrador or Lab, is one of several kinds of retrievers, a type of gun dog. Labradors are athletic, playful, and the most popular breed of dog by registered ownership in Australia, Canada, New Zealand, the United Kingdom,and the United States (since 1991).

Pug

The Pug is a breed of dog with a wrinkly, short-muzzled face and curled tail. The breed has a fine, glossy coat that comes in a variety of colours, most often fawn or black, and a compact square body with well-developed muscles.

Pugs were brought from China to Europe in the sixteenth century and were popularized in Western Europe by the House of Orange of the Netherlands, and the House of Stuart. In the United Kingdom in the nineteenth century Queen Victoria developed a passion for Pugs which she passed on to other members of the Royal family.

Pugs are known for being sociable and gentle companion dogs. The breed remains popular into the twenty-first century, with some famous celebrity owners.

St. Bernard
The St. Bernard is a giant dog, with the largest individuals reaching over 140 kg. The average weight of the breed is between 65–120 kg or more and the approximate height at the withers is 70 to 90 cm (28 to 35 in). The coat can be either smooth or rough, with the smooth coat close and flat. The rough coat is dense but flat, and more profuse around the neck and legs. The coat is typically a red color with white, or sometimes a mahogany brindle with white. Black shading is usually found on the face and ears. The tail is long and heavy, hanging low. Eyes should have naturally tight lids, with "haws only slightly visible"; they are usually brown, but sometimes can be icy blue.