Breed: Daschund
The dachshund is a short-legged, elongated dog breed, of the hound family. The standard size was developed to scent, chase, and flush badgers and other burrow-dwelling animals, while the miniature was developed to hunt smaller prey, like rabbits. In the American West, they have also been used to hunt prairie dogs.
The name "dachshund" is of German origin and literally means "badger dog", from Dachs ("badger") and Hund ("dog"). The pronunciation varies widely in English: variations of the first syllable include /ˈdɑːks/, /ˈdæks/, /ˈdæʃ/, and of the second syllable /hʊnt/, /hʊnd/, /ənd/. In German it is pronounced [ˈdakshʊnt]. Because of their long, narrow build, they are often nicknamed hot dog, wiener dog or sausage dog. Although "dachshund" is a German word, in modern German they are also commonly known by the name Dackel; in the case of the formally certified hunting and tracking rank, the name Teckel is used.
While classified in the hound group or scent hound group in the United States and Great Britain, there are some who consider this classification to be arguable, speculating that it arose from the fact that the word Hund is similar to the English word hound – and the word "Dachshund" has even been anglicized as "Dash Hound". Many dachshunds, especially the wire-haired subtype, may exhibit behavior and appearance that are similar to that of the terrier group of dogs. An argument can be made for the scent (or hound) group classification because the breed was developed to use scent to trail and hunt animals, and probably descended from scent hounds, such as bloodhounds, pointers, Basset Hounds, or even Bruno Jura Hounds; but with the dogged and persistent personality and love for digging that probably developed from the terrier, it can also be argued that they could belong in the terrier, or "earth dog", group. In the Fédération Cynologique Internationale (World Canine Federation), or FCI, the dachshund is actually in its own group, Group 4, which is the dachshund group. Part of the controversy is because the dachshund is the only certifiable breed of dog to hunt both above and below ground.
Appearance 
The typical dachshund is long-bodied and muscular, with short and stubby legs. Its paws are unusually large and paddle-shaped, for efficient digging. It has skin that is loose enough not to tear while tunneling in tight burrows to chase prey. The dachshund has a deep chest to allow enough lung capacity to keep going when hunting. Its snout is long with an increased nose area that absorbs odors.
There are three types, classified by their coats: short-haired, called "smooth"; long-haired; and wire-haired.
Temperament 
Dachshunds are playful, but can be stubborn, and are known for their propensity for chasing small animals, birds, and tennis balls with great determination and ferocity. Many dachshunds are stubborn, making them a challenge to train. Several quotes have been recorded regarding the training of dachshunds; one is from E. B. White:
"Being the owner of dachshunds, to me a book on dog discipline becomes a volume of inspired humor. Every sentence is a riot. Some day, if I ever get a chance, I shall write a book, or warning, on the character and temperament of the dachshund and why he can't be trained and shouldn't be. I would rather train a striped zebra to balance an Indian club than induce a dachshund to heed my slightest command. When I address Fred I never have to raise either my voice or my hopes. He even disobeys me when I instruct him in something he wants to do."
They have a loud bark and without proper training they can become nuisance barkers.Dachshunds are known for their devotion and loyalty to their owners, though they can be standoffish towards strangers. If left alone, many dachshunds will whine until they have companionship. Like many dogs if left alone too frequently, some dachshunds are prone to separation anxiety and may chew objects in the house to relieve stress. They rank 49th in Stanley Coren's Intelligence of Dogs, being of average working and obedience intelligence.
Dachshunds can be difficult to housebreak, and patience and consistency is often needed in this endeavor.
According to the American Kennel Club’s breed standards, "the dachshund is clever, lively and courageous to the point of rashness, persevering in above and below ground work, with all the senses well-developed. Any display of shyness is a serious fault." Their temperament and body language give the impression that they do not know or care about their relatively small size. Like many small hunting dogs, they will challenge a larger dog. Indulged dachshunds may become snappy or extremely obstinate.
Many dachshunds do not like unfamiliar people, and many will growl or bark at them. Although the dachshund is generally an energetic dog, some are sedate. This dog's behavior is such that it is not the dog for everyone. A bored, untrained dachshund will become destructive. If raised improperly and not socialized at a young age, dachshunds can become aggressive or fearful. They require a caring owner who understands their need for entertainment and exercise.
Dachshunds may not be the best pets for small children. Like any dog, dachshunds need a proper introduction at a young age. Well trained Dachshunds and well behaved children usually get along fine. Otherwise, they may be aggressive and bite an unfamiliar child, especially one that moves quickly around them or teases them. However, many Dachshunds are very tolerant and loyal to children within their family, but these children should be mindful of the vulnerability of the breed's back and not carry them around roughly.
A 2008 University of Pennsylvania study of 6,000 dog owners who were interviewed indicated that dogs of smaller breeds were more likely to be "genetically predisposed towards aggressive behaviour". Dachshunds were rated the most aggressive, with 20% having bitten strangers, as well as high rates of attacks on other dogs and their owners. The study noted that attacks by small dogs were unlikely to cause serious injuries and because of this were probably under-reported.
Article Source:
http://en.wikipedia.org/wiki/Dachshund