Labradors are relatively large, with males typically weighing 30–36 kg (66–79 lb) and females 25–32 kg (55–71 lb). Labs weighing close to or over 100 lbs are considered obese or having a major fault under American Kennel Club standards, although some labs weigh significantly more.
Size: Labs are a medium-large but compact breed. They should have an appearance of proportionality. They should be as long from the withers to the base of the tail as they are from the floor to the withers. Males should stand 22.5–24.5 inches (57–62 cm) tall at the withers and weigh 65–80 lb (29–36 kg). Females should stand 21.5–23.5 inches (55–60 cm) and weigh 55–70 lb (25–32 kg). By comparison under UK Kennel Club standards, height should be 22–22.5 inches (56–57 cm) for males, and 21.5–22 inches (55–56 cm) for females.
Labradors are a well-balanced, friendly and versatile breed, adaptable to a wide range of functions as well as making very good pets. As a rule they are not excessively prone to being territorial, pining, insecure, aggressive, destructive, hypersensitive, or other difficult traits which sometimes manifest in a variety of breeds, and as the name suggests, they are excellent retrievers. As an extension of this, they instinctively enjoy holding objects and even hands or arms in their mouths, which they can do with great gentleness (a Labrador can carry an egg in its mouth without breaking it). They are also known to have a very soft feel to the mouth, as a result of being bred to retrieve game such as waterfowl. They are prone to chewing objects (though they can be trained out of this behaviour). The Labrador Retriever's coat repels water to some extent, thus facilitating the extensive use of the dog in waterfowl hunting.
Labradors have a reputation as a very mellow breed and an excellent family dog (including a good reputation with children of all ages and other animals), but some lines (particularly those that have continued to be bred specifically for their skills at working in the field rather than for their appearance) are particularly fast and athletic. Their fun-loving boisterousness and lack of fear may require training and firm handling at times to ensure it does not get out of hand—an uncontrolled adult can be quite problematic. Females may be slightly more independent than males. Labradors mature at around three years of age; before this time they can have a significant degree of puppyish energy, often mislabelled as being hyperactive. Because of their enthusiasm, leash-training early on is suggested to prevent pulling when full-grown. Labs often enjoy retrieving a ball endlessly and other forms of activity (such as agility, frisbee, or flyball). Reflecting their retrieving bloodlines, almost every Lab loves playing in water or swimming
Although they will sometimes bark at noise, especially noise from an unseen source ("alarm barking"), Labs are usually not noisy or territorial. They are often very easygoing and trusting with strangers, and therefore are not usually suitable as guard dogs.
Labradors have a well-known reputation for appetite, and some individuals may be highly indiscriminate, eating digestible and non-food objects alike. They are persuasive and persistent in requesting food. For this reason, the Labrador owner must carefully control his/her dog's food intake to avoid obesity and its associated health problems.
The steady temperament of Labs and their ability to learn make them an ideal breed for search and rescue, detection, and therapy work. Their primary working role in the field continues to be that of a hunting retriever.
Health:
Labrador pups should not be brought home before they are 7–10 weeks old. Their life expectancy is generally 12 to 13 years, and it is a healthy breed with relatively few major problems. Notable issues related to health and wellbeing include:
Inherited disorders
▪ Labs are somewhat prone to hip and elbow dysplasia, especially the
larger dogs, though not as much as some other breeds. Hip scores are
recommended before breeding.
▪ Labs also suffer from the risk of knee problems. A luxating patella is a
common occurrence in the knee where the leg is often bow shaped.
▪ Eye problems are also possible in some Labs, particularly progressive
retinal atrophy, cataracts, corneal dystrophy and retinal dysplasia. Dogs
which are intended to be bred should be examined by a veterinary
ophthalmologist for an eye score.
▪ Hereditary myopathy, a rare inherited disorder that causes a deficiency
in type II muscle fibre.
▪ There is a small incidence of other conditions, such as autoimmune
diseases and deafness in labs, either congenitally or later in life.
Other disorders
Labs are sometimes prone to ear infection, because their floppy ears trap warm moist air. This is easy to control, but needs regular checking to ensure that a problem is not building up unseen. A healthy Labrador ear should look clean and light pink (almost white) inside. Darker pink (or inflamed red), or brownish deposits, are a symptom of ear infection. The usual treatment is regular cleaning daily or twice daily (being careful not to force dirt into the sensitive inner ear) and sometimes medication (ear drops) for major cases. As a preventative measure, some owners clip the hair carefully around the ear and under the flap, to encourage better air flow. Labradors also get cases of allergic reactions to food or other environmental factors.
Obesity
Labs can easily become overweight, due to their enjoyment of treats, hearty appetites, and endearing behaviour towards people. Lack of activity is also a contributing factor. A healthy Labrador should keep a very slight hourglass waist and be fit and light, rather than fat or heavy-set. Excessive weight is strongly implicated as a risk factor in the later development of hip dysplasia or other joint problems and diabetes, and also can contribute to general reduced health when older. Osteoarthritis is common place in older, especially overweight, Labs. A 14 year study covering 48 dogs by food manufacturer Purina showed that labs fed to maintain a lean body shape outlived those fed freely, by around two years, emphasizing the importance of not over-feeding.
