
A spaniel is a type of gun dog. Spaniels were especially bred to flush game out of denser brush. By the late 17th century, spaniels had been specialized into water and land breeds. The extinct English Water Spaniel was used to retrieve water fowl shot down with arrows. Land spaniels were setting spaniels—those that crept forward and pointed their game, allowing hunters to ensnare them with nets, and springing spaniels—those that sprang pheasants and partridges for hunting with falcons, and rabbits for hunting with greyhounds. During the 17th century, the role of the spaniel dramatically changed as Englishmen began hunting with flintlocks for wing shooting. Charles Goodall and Julia Gasow (1984) write that spaniels were "transformed from untrained, wild beaters, to smooth, polished gun dogs."

The American Cocker Spaniel is a breed of sporting dog. It is a spaniel type dog that is closely related to the English Cocker Spaniel; the two breeds diverged during the 20th century due to differing breed standards in the US and the UK. In the United States, the breed is usually called a Cocker Spaniel, while elsewhere in the world, it is called an American Cocker Spaniel to distinguish it from its older English cousin. The word cocker is commonly held to stem from their use to hunt woodcock in England, while spaniel is thought to be derived from the breed's origins in Spain.
The American Water Spaniel,, is a breed of spaniel which originated in the United States. It was developed in the state of Wisconsin during the 19th century from a number of other breeds, including the Irish and English Water Spaniels. The breed was saved by Dr. Fred J. Pfeifer, who set up the breed club and standard, and whose work led to recognition for the breed by the United Kennel Club, and later, the American Kennel Club. While they are the state dog of Wisconsin, they remain a rare breed.

The Blue Picardy Spaniel is a breed of Spaniel originating in France, from the area around the mouth of the River Somme, around the start of the 20th century. It is descended from Picardy Spaniels and English Setters, and is described as a quiet breed that requires much exercise due to its stamina. It is especially good with children. Similar to the Picardy Spaniel, it has a distinctive coloured coat. Recognised by only a handful of kennel associations, the breed is predominantly known in France and Canada.

The Boykin Spaniel is a medium-sized breed of dog, a Spaniel bred for hunting wild turkeys and ducks in the Wateree River Swamp of South Carolina, in the United States. It is the state dog of South Carolina, where it was discovered and further developed by hunters in the 1900s. 1 September is Boykin Spaniel Day in South Carolina.

The Cavalier King Charles Spaniel is a small breed of spaniel classed in the toy group of The Kennel Club and the American Kennel Club that originated in the United Kingdom. Since 2000, it has grown in popularity in the United States and ranks as the 19th most popular pure-breed in the United States. It has a silky, smooth coat and commonly a smooth undocked tail. The breed standard recognizes four colours: Blenheim, tricolour (black/white/tan), black and tan, and ruby. The breed is generally friendly, placid, and good with both children and other animals; however, they require much human interaction. Since they are family dogs, it is recommended to not leave one alone for long periods at a time. The expected average lifespan of a Cavalier King Charles Spaniel is between nine and fourteen years.

The Clumber Spaniel is a breed of dog of the spaniel type, developed in the United Kingdom. It is the largest of the spaniels, and comes in predominantly white with either lemon or orange markings. The name of the breed is taken from Clumber Park in Nottinghamshire where the breed was first developed. It is a gundog that specialises in hunting in heavy cover. They are gentle and loyal, and can act aloof with strangers. They have several habits which could be considered disadvantages, including a constant shedding of its coat and snoring.

Cocker Spaniels are dogs belonging to two breeds of the spaniel dog type: the American Cocker Spaniel and the English Cocker Spaniel, both of which are commonly called simply Cocker Spaniel in their countries of origin. In the early 20th century, Cocker Spaniels also included small hunting spaniels.

The Drentsche Patrijshond is a versatile spaniel-type hunting dog from the Dutch province of Drenthe. Called the Dutch Partridge Dog in English, approximately 5,000 dogs are registered with the breed club in the Netherlands, and breed clubs operate in Belgium, Denmark, Scandinavia and North America. The Drentsche Patrijshond bears some resemblance to both spaniel and setter types of dog. An excellent pointer and retriever, this dog is often used to hunt fowl and adapts equally well to the field or marshes.

The English Cocker Spaniel is a breed of gun dog. It is noteworthy for producing one of the most varied numbers of pups in a litter among all dog breeds. 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 "house" cockers. It is one of several varieties of spaniel and is the foundation of its American cousin, the American Cocker Spaniel. The English Cocker is closer to the working-dog form of the Field Spaniel and the English Springer Spaniel.
The English Springer Spaniel is a breed of gun dog in the Spaniel family traditionally used for flushing and retrieving game. It is an affectionate, excitable breed with a typical lifespan of twelve to fourteen years. They are very similar to the Welsh Springer Spaniel and are descended from the Norfolk or Shropshire Spaniels of the mid-19th century; the breed has diverged into separate show and working lines. The breed suffers from average health complaints. The show-bred version of the breed has been linked to "rage syndrome", although the disorder is very rare. It is closely related to the Welsh Springer Spaniel and very closely to the English Cocker Spaniel; less than a century ago, springers and cockers would come from the same litter. The smaller "cockers" hunted woodcock while the larger littermates were used to flush, or "spring", game. In 1902, The Kennel Club recognized the English Springer Spaniel as a distinct breed. They are used as sniffer dogs on a widespread basis. The term Springer comes from the historic hunting role, where the dog would flush (spring) birds into the air.

The Field Spaniel is a medium-sized dog breed of spaniel type. They were originally developed to be all-black show dogs in the late 19th and early 20th centuries and were unpopular for work as a hunting dog. However, during the mid-20th century they were redeveloped as a longer-legged dog that was more suitable to be used for field work. They are now considered to be a rare breed, and are registered as a Vulnerable Native Breed by The Kennel Club.

The German Spaniel, also known as the Deutscher Wachtelhund, is a breed of dog that was developed in Germany around 1890, and is used as a hunting dog. Descended from the old German breed, the Stöberer, which became popular with commoners following the Revolutions of 1848 in the German states, who required a versatile hunting dog. Stoeberer is now a type of hunting dog in Germany with the Wachtelhund being its sole member. The breed is not very well known outside of Germany, but was recognised by the United Kennel Club in 1996.

The Japanese Chin, also known as the Japanese Spaniel, is a dog known for its strabismus of the eyes. Being both a lap dog and a companion dog, this toy breed has a distinctive heritage.

The King Charles Spaniel is a small dog breed of the spaniel type. In 1903, the Kennel Club combined four separate toy spaniel breeds under this single title. The other varieties merged into this breed were the Blenheim, Ruby and Prince Charles Spaniels, each of which contributed one of the four colours available in the breed.

Mildred "Millie" Kerr Bush was the pet English Springer Spaniel of Barbara and George H. W. Bush. She was named for Mildred Caldwell Kerr, a long-time friend of the Bushes, which is also the name of Kerr's granddaughter, Millie Kerr.

Ch. Obo (1882–1895), was an American Cocker Spaniel who is considered to be the father of the modern breed, though physically, he was different from today's American Cocker. During his day, he was a successful show dog, winner of many Best-in-Show titles.
The Papillon, also called the Continental Toy Spaniel, is a breed of dog, of the spaniel type. One of the oldest of the toy spaniels, it derives its name from its characteristic butterfly-like look of the long and fringed hair on the ears. A Papillon with dropped ears is called a Phalene, which translates to moth in French.

The Pont-Audemer Spaniel or Epagneul Pont-Audemer is a rare breed of French gundog. It originated in the nineteenth century from different breeds of water spaniels, and took more of a setter role in hunting than that of a traditional spaniel. Following the Second World War, the breed's numbers dropped so low that the breed club decided to allow cross breeding with other breeds because of fears of the existing stock becoming overly inbred. In 1980, the breed club was merged with that of the Picardy Spaniel.

The Russian Spaniel is a type of spaniel first standardised in 1951 in the Soviet Union after World War II by cross breeding English Cocker Spaniels, English Springer Spaniels and other spaniel breeds. In 1951, the standard of the Russian spaniel was adopted, the selection of dogs for breeding began to be carried out in accordance with the requirements. Physically it is similar to a Cocker Spaniel, but has a shorter, tighter coat and a longer body. Developed and used as hunting dogs, this breed does not suffer from any major health complaints other than those normally associated with spaniels. It is the only gun dog breed originated in Russia. It is used for hunting game birds and hares. Popular in its native Russia, the breed was only introduced overseas in the 1990s, and is not yet recognised by any major kennel clubs, but is recognised by Russian Kynological Federation.

The Saint-Usuge Spaniel is a breed of Spaniel originating in the Bresse region of France. The breed has origins dating back to at least the 16th century, but was nearly extinct by the end of World War II. Through the efforts of Father Robert Billard, the breed was resurrected during the second half of the 20th century; its national breed club was founded in 1990. The breed was recognised by the Société Centrale Canine in 2003.

The Stabyhoun or Stabij is one of the top five rarest dog breeds in the world. It is from the Dutch province of Friesland and in particular from the Frisian forest area, a region in the southeast and east of Friesland. The breed has been mentioned in Dutch literature going back to the early 1800s, but has only extended its range from the 1960s outside of Friesland and not until the 2000s did the range officially extend beyond the Netherlands. The name Stabij translates roughly as "stand by me" with the last part simply Frisian, meaning dog, which is pronounced "hoon". The dog is considered a Dutch national treasure. There are only a few thousand Stabyhouns in existence today worldwide.

Staffordshire dog figurines are matching pairs of pottery spaniel dogs, standing guard, which were habitually placed on mantelpieces in 19th-century homes. Mainly manufactured in Staffordshire pottery, these earthenware figures were also made in other English counties and in Scotland. They are also known as hearth spaniels or fireplace dogs as they were positioned on top of the mantelpiece. Many other breeds were produced, particularly the greyhound, though the spaniels were especially popular and this is attributed to royalty favouring the King Charles Spaniel breed. In Scotland, they were colloquially termed Wally dugs and were manufactured in bulk at potteries in places such as Pollokshaws in Glasgow and Portobello near Edinburgh.

The Sussex Spaniel is a breed of dog native to Sussex in southern England. It is a low, compact spaniel and is as old a breed as and similar in appearance to the Clumber Spaniel. They can be slow-paced, but can have a clownish and energetic temperament. They suffer from health conditions common to spaniels and some large dogs, as well as a specific range of heart conditions and spinal disc herniation.

The Welsh Springer Spaniel is a breed of dog and a member of the spaniel family. Thought to be comparable to the old Land Spaniel, they are similar to the English Springer Spaniel and historically have been referred to as both the Welsh Spaniel and the Welsh Cocker Spaniel. They were relatively unknown until a succession of victories in dog trials by the breed increased its popularity. Following recognition by The Kennel Club in 1902, the breed gained the modern name of Welsh Springer Spaniel. The breed's coat only comes in a single colour combination of white with red markings, usually in a piebald pattern. Loyal and affectionate, they can become very attached to family members and are wary of strangers. Health conditions are limited to those common among many breeds of dog, although they are affected more than average by hip dysplasia and some eye conditions. They are a working dog, bred for hunting, and while not as rare as some varieties of spaniel, they are rarer than the more widely known English Springer Spaniel with which they are sometimes confused.

