The following is a list of dog breed

Dog breed

Dog breeds are groups of closely related and visibly similar domestic dogs, which are all of the subspecies Canis lupus familiaris, having characteristic traits that are selected and maintained by humans, bred from a known foundation stock....

s that are or have been used as aides on police forces. There are different jobs a police dog

Police dog

A police dog, often referred to as a "K-9 dog" in some areas , is a dog that is trained specifically to assist police and other law-enforcement personnel in their work...

 can do: public order enforcement, illicit substance detection, tracking, and cadaver searching. Note that some police forces only use one breed of dog for every one of these tasks rather than using one breed for tracking and another for illegal substance detection.

Public order enforcement dogs

The job these dogs hold is to chase after a fleeing suspect and hold him for officers, or detain suspects from some action by threat of the dog being released. This is the traditional image of a police dog.

• Akita Inu
• American Pit Bull Terrier
  American Pit Bull Terrier
  The American Pit Bull Terrier is a medium-sized, solidly built, short haired dog whose early ancestors came from England and Ireland...
  
  
• American Staffordshire Terrier
  American Staffordshire Terrier
  The American Staffordshire terrier is a medium-sized, short-coated American dog breed. In the early part of the twentieth century the breed gained social stature and was accepted by the American Kennel Club as the American Staffordshire Terrier in 1936...
  
  
• Australian Shepherd
  Australian Shepherd
  The Australian shepherd is a breed of herding dog that was developed on ranches in the Western United States. Despite its name, the breed, commonly known as an Aussie, did not originate in Australia They acquired their name because some of the Australian sheepdogs arrived in the United States with...
  
  
• Belgian Malinois
• Boxer
  Boxer (dog)
  Developed in Germany, the Boxer is a breed of stocky, medium-sized, short-haired dog. The coat is smooth and fawn or brindled, with or without white markings. Boxers are brachycephalic , and have a square muzzle, mandibular prognathism , very strong jaws and a powerful bite ideal for hanging on to...
  
  
• Doberman pinscher
• Dutch Shepherd
• German Shepherd
  German Shepherd Dog
  The German Shepherd Dog , also known as an Alsatian or just the German Shepherd, is a breed of large-sized dog that originated in Germany. The German Shepherd is a relatively new breed of dog, with its origin dating to 1899. As part of the Herding Group, the German Shepherd is a working dog...
  
  
• Rottweiler
  Rottweiler
  The Rottweiler is a medium to large size breed of domestic dog that originated in Rottweil, Germany. The dogs were known as "Rottweil butchers' dogs" because they were used to herd livestock and pull carts laden with butchered meat and other products to market...
  
  
• Schnauzer - Standard
  Standard Schnauzer
  The Standard Schnauzer is the original breed of the three breeds of Schnauzer, and despite its wiry coat and general appearance, is not related to the British terriers. Rather, its origins are in old herding and guard breeds of Europe. Generally classified as a working or utility dog, this...
  
   or Giant
  Giant Schnauzer
  The Giant Schnauzer is a large, powerful, and compact breed of dog. It is one of the three Schnauzer breeds. Like most large breeds, the Giant Schnauzer needs a fair amount of exercise.-Appearance:...
  
  

Illicit substance detection dogs

These dogs sit with their handlers in airports, sniffing the passengers from afar for illegal substances a person may carry in their luggage or carry-on items; these are most commonly drug

Drug

A drug, broadly speaking, is any substance that, when absorbed into the body of a living organism, alters normal bodily function. There is no single, precise definition, as there are different meanings in drug control law, government regulations, medicine, and colloquial usage.In pharmacology, a...

s or explosives, although many nations also interdict foreign food items.

• Australian Shepherd
  Australian Shepherd
  The Australian shepherd is a breed of herding dog that was developed on ranches in the Western United States. Despite its name, the breed, commonly known as an Aussie, did not originate in Australia They acquired their name because some of the Australian sheepdogs arrived in the United States with...
  
  
• Beagle
  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, and other game...
  
  
• Basset Hound
  Basset Hound
  The Basset Hound is a short-legged breed of dog of the hound family. They are scent hounds, bred to hunt rabbits and hare by scent. Their sense of smell for tracking is second only to that of the Bloodhound....
  
  
• English Cocker Spaniel
  English Cocker Spaniel
  The English Cocker Spaniel is a breed of gun dog. The English Cocker Spaniel is an active, good-natured, sporting dog, standing well up at the withers and compactly built. There are "field" or "working" cockers and "show" cockers...
  
  
• English Springer Spaniel
  English Springer Spaniel
  The English Springer Spaniel is a breed of gun dog traditionally used for flushing and retrieving game. It is an affectionate, excitable breed with an average lifespan of twelve to fourteen years. Descended from the Norfolk or Shropshire Spaniels of the mid-19th century, the breed has diverged into...
  
  
• Foxhound
  Foxhound
  A foxhound is a type of large hunting hound. Foxhounds hunt in packs and, like all scent hounds, have a strong sense of smell. They are used in hunts for foxes, hence the name. When out hunting they are followed usually on horseback and will travel several miles to catch their target. These dogs...
  
  
• Labrador Retriever
  Labrador Retriever
  The Labrador Retriever is one of several kinds of retriever, a type of gun dog. A breed characteristic is webbed paws for swimming, useful for the breed's original purpose of retrieving fishing nets. The Labrador is the most popular breed of dog by registered ownership in Canada, the United...
  
  
• Sulimov Dog
  Sulimov dog
  The Sulimov Dog is a Russian Jackal-Dog Hybrid originating from an initial hybrid between two Lapponian Herders and two Turkmen golden jackals. The breed was developed by Klim Sulimov for Aeroflot airline security. He is described as a Senior Research Assistant at the D.S...
  
  
• Schnauzer
  Schnauzer
  A Schnauzer is a German dog type that originated in Germany in the 15th and 16th centuries. The term comes from Schnauze , the German word for "snout", because of the dog's distinctively bearded snout. The word Schnauzer also means moustache in German; some authorities, such as Encyclopædia...
  
   (all sizes)
• Weimaraner
  Weimaraner
  The Weimaraner is a dog that was originally bred for hunting in the early 19th century. Early Weimaraners were used by royalty for hunting large game such as boar, bear, and deer. As the popularity of large game hunting began to decline, Weimaraners were used for hunting smaller animals like...
  
  
• German Shepherd
• Belgian Malinois

Tracking dogs

These dogs are used for sniffing the trails of lost or missing persons or objects.

• Australian Shepherd
  Australian Shepherd
  The Australian shepherd is a breed of herding dog that was developed on ranches in the Western United States. Despite its name, the breed, commonly known as an Aussie, did not originate in Australia They acquired their name because some of the Australian sheepdogs arrived in the United States with...
  
  
• Bloodhound
  Bloodhound
  The Bloodhound is a large breed of dog which, while originally bred to hunt deer and wild boar, was later bred specifically to track human beings. It is a scenthound, tracking by smell, as opposed to a sighthound, which tracks using vision. It is famed for its ability to discern human odors even...
  
  
• Coonhound
  Coonhound
  A Coonhound is a type of scent hound and a member of the hound group.Coonhounds are an American style of hunting dog developed for the quarry and working conditions found in the United States. Coondogs are highly valued.-History:...
  
  
• Labrador Retriever
  Labrador Retriever
  The Labrador Retriever is one of several kinds of retriever, a type of gun dog. A breed characteristic is webbed paws for swimming, useful for the breed's original purpose of retrieving fishing nets. The Labrador is the most popular breed of dog by registered ownership in Canada, the United...
  
  

Cadaver-sniffing dogs

These dogs are trained to detect the odor of decomposing bodies, in order to find corpses and human remains. Their noses are so sensitive, they can even smell a body from under running water.

• Beagle
  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, and other game...
  
  
• Bloodhound
  Bloodhound
  The Bloodhound is a large breed of dog which, while originally bred to hunt deer and wild boar, was later bred specifically to track human beings. It is a scenthound, tracking by smell, as opposed to a sighthound, which tracks using vision. It is famed for its ability to discern human odors even...
  
  
• Labrador Retriever
  Labrador Retriever
  The Labrador Retriever is one of several kinds of retriever, a type of gun dog. A breed characteristic is webbed paws for swimming, useful for the breed's original purpose of retrieving fishing nets. The Labrador is the most popular breed of dog by registered ownership in Canada, the United...