The Labrador Retriever, also known simply as the Labrador or Lab, is a British breed of retriever gun dog. It was developed in the United Kingdom from St John's water dogs imported from the Colony of Newfoundland, and was named after the Labrador region in that colony. It is among the most commonly kept dogs in several countries, particularly in the Western world.
Labradors are often friendly, energetic and playful.
In the 1830s the 10th Earl of Home and his nephews, the 5th Duke of Buccleuch and Lord John Scott, imported progenitors of the breed from Newfoundland to Europe for use as gun dogs. Another early advocate of these Newfoundland fishing dogs was the 2nd Earl of Malmesbury, who bred them for their expertise in waterfowling.
History
thumb|[[Buccleuch Avon, whelped in 1885]]
The Labrador breed dates back to at least the 1830s, when St John's water dogs bred by European settlers in Newfoundland were first introduced to Britain from ships trading between Canada and Poole in Dorset. These were then bred with British hunting dogs to create what became known as the Labrador Retriever. Its early patrons included the Earl of Malmesbury, the Duke of Buccleuch, the Earl of Home and Sir John Scott. Early writers have confused the Labrador with the much larger Newfoundland and the Lesser Newfoundland, with Charles William George St John even referring to the Lesser Newfoundland as the Newfoundland. Colonel Peter Hawker describes the first Labrador as being not larger than an English Pointer, more often black than other colours, long in its head and nose with a deep chest, fine legs, and short and smooth coat, and did not carry its tail as highly as the Newfoundland. Hawker distinguishes the Newfoundland from both the "proper Labrador" and St John's breed of these dogs
By 1870 the name Labrador Retriever had become common in England. The liver (now usually called chocolate) Labrador emerged in the late 1800s, with liver-coloured pups documented at the Buccleuch kennels in 1892; the first yellow Labrador on record was born in 1899 (Ben of Hyde, kennels of Major C.J. Radclyffe). The breed was recognised by the Kennel Club in 1903. The first American Kennel Club (AKC) registration was in 1917.
Characteristics
thumb|The head is broad with a pronounced stop.
thumb|Black
thumb|Chocolate
There is a great deal of variety among Labradors. The following characteristics are typical of the conformation show bred (bench-bred) lines of this breed in the United States and are based on the American Kennel Club standard. Significant differences between UK and US standards are noted.
- Size: Labradors are a medium-large breed. They should be as long from the withers to the base of the tail as they are from the floor to the withers. The AKC standard includes an ideal weight for dogs of and for bitches as . and the FCI which quotes a range of for dogs with bitches ideal at .
- Coat: The Labrador Retriever's coat should be short and dense, but not wiry. The coat is water-resistant, so the dog does not get cold when taking to the water in the winter. That means that the dog naturally has a slightly dry, oily coat. Acceptable colours are black, yellow, and chocolate.
- Head: The head should be broad with slightly pronounced eyebrows. The eyes should be kind and expressive. Appropriate eye colours are brown and hazel. The lining around the eyes should be black. The ears should hang close to the head and be set slightly above the eyes.
- Jaws: The jaws should be strong and powerful. The muzzle should be of medium length and should not be too tapered. The jaws should hang slightly and curve gracefully back.
- Body: The body should have a powerful and muscular build.
The tail and coat are designated "distinctive [or distinguishing] features" of the Labrador by both the Kennel Club and AKC.
Puppies of all colours can occur in the same litter. Coat colour is determined primarily by three genes, called MC1R, Agouti, and CBD103. If a dog carries wild type alleles at all three loci, the dog will have a yellow coat. If a dog has a loss-of-function mutation at MC1R, it will also have a yellow coat, regardless of the genotypes at the other two loci. Dogs carrying wild-type alleles for MC1R and Agouti, together with the black allele of CBD103, will have a black coat.