The Pewter Longhair is a short, medium-sized cat with an elegant appearance. Stocky and compact in structure, the Pewter Longhair is a cat with a short stature, but an extremely graceful appearance. The head of these longhaired cats is slightly wedge-shaped, with small pointed ears that are set wide apart and stand alert. The face is broad, with a wide jaw line that tapers in to a fine and firm chin. The nose is short and slightly snubbed, with a round muzzle and pronounced whisker pads. These cats have beautiful oval-shaped eyes that are brilliant and expressive in a bright shade of copper or orange. The Pewter Longhairs have short and thick legs, which hold the heavy and muscular body firmly on the ground, while the paws are small and compact. The cats of this breed have dense, thick and plush longhaired coat. Pewter, the colour of the grey alloy gives the coat a unique charm. These cats have a long, bushy tail that forms a beautiful plume when fanned out.

The Pewter Longhair breed found its origin around the 1960s and was likened to the Chinchilla due to the latter's blue or green eyes. History has it that the Pewter Longhair breed came about as a result of an accidental mating. One of the individuals majorly accredited with the development and recognition gained by the breed is Miss M. Liard, who was extensively involved in the breeding of these cats. To begin with, the name of this breed was planned to be in association with its silver shaded colour. However, later the officials decided that the mantle and tipping of these cats is heavier than the Shaded Silver and hence, the name Pewter was decided upon. Interestingly, the Pewter Longhair was recently introduced into the world of philately, with the Bhutanese government releasing an official postal stamp with the cat's name and picture. In 1986, this breed gained the official recognition and championship qualification from The UK Governing Council of the Cat Fancy (GCCF).

The Pewter Longhair is an affectionate and friendly cat, with a gentle disposition. These cats are strongly attached to their owners and are fond of their company. These cats thrive on affection and like to follow their owners all around the house. The Pewter Longhairs are a lively breed of cats. With their interesting appearance and friendly appearance, they make an excellent companion for the whole family, especially children and older people. Though docile in nature, these cats are quite playful and energetic. They love to spend time with their cat toys and appreciate owner participation in their games. The Pewter Longhairs are also very curious by nature and will normally go around the house, exploring anything that is new or interesting. These cats love to be pampered by their owners and will normally like to be cuddled or patted. Being highly sociable and even-tempered, they get along quite well with strangers and other pets in the house. They normally do not show much hesitation when taken to a new place or amongst strangers.

The Pewter Longhairs are a loving and devoted breed of cats and ideal pets for large households with lots of family members. However, households interested in owning a Pewter Longhair should be well prepared for the extensive amounts of grooming these cats require. Owing to their thick and long coat, these cats need regular grooming and bathing to keep the coat in a healthy condition. It is important for the owners to maintain a daily routine of regular brushing and combing to avoid formation of painful tangles and fur balls. An active Pewter Longhair adult will require up to 80 Kcals of food per kg of their body weight everyday. However, at times, these cats have a tendency to overeat. Owners need to carefully monitor their dietary intake so that these cats do not become obese.

The Pewter Longhairs are basically a healthy and robust breed of cats. Highly resistant to disease, this breed generally does not suffer from any major feline ailments. However, it is strongly recommended that the Pewter Longhairs be regularly taken for their annual health checkups. This is primarily to ensure proper cleaning of their teeth, to check the liver and kidney function and to check for the presence of ear mites, fleas or the like. It is also crucial to strictly follow the vaccination schedule for this breed.