Chinook

The Chinook is one of the rarest dog breeds in the world and America only sled dog breed, developed in New Hampshire for drafting and sled work. Daily life with a Chinook revolves around their gentle, people-oriented temperament — they are remarkably calm for a working breed, genuinely affectionate without being clingy, and patient enough to earn their reputation as excellent therapy dogs. They thrive on being part of family activities and become visibly dejected when excluded or left alone for long periods. Their exercise needs are substantial at 60+ minutes daily, and they particularly excel at pulling activities, hiking, and dog sports that let them use their considerable strength and intelligence. Training is straightforward; they are eager to please, quick to learn, and respond well to positive methods, making them one of the more accessible working breeds for committed first-time owners. Chinooks get along well with children, other dogs, and even strangers, which makes them poor guard dogs despite their size. Their double coat sheds heavily, particularly during seasonal blowouts twice a year, and requires regular brushing to manage. The breed major drawback is availability — finding a reputable breeder can involve waiting lists of a year or more. Chinooks are not apartment dogs; they need space to move and a fenced yard for daily play. For active families who want a gentle, trainable large breed and can find a responsible breeder, the Chinook offers a uniquely rewarding partnership built on mutual devotion and shared outdoor adventures.

History

The Chinook was created in the early 1900s by Arthur Treadwell Walden, a New Hampshire dog driver and adventurer who bred a mastiff-type farm dog with Greenland Huskies to produce a powerful, fast sled dog. The breed namesake, a dog called Chinook, was born in 1917 and became the lead dog on Admiral Byrd 1929 Antarctic expedition. After Walden death, the breed population dwindled to just 28 dogs by 1965, and the Guinness Book of World Records listed them as the rarest dog breed. Dedicated breeding programs gradually rebuilt the population, and the AKC officially recognized the Chinook in 2013.

Size
Large
Weight
23–41 kg
Height
53–69 cm
Lifespan
12–15 years

Characteristics

Energy Level
Grooming
Shedding
Trainability
Barking

Compatibility

✓
Kids
✓
Other Dogs
✓
Strangers
✗
Apartments
✓
First-time Owners

Care Guide

Their thick double coat requires brushing 2-3 times per week year-round, increasing to daily during spring and fall shedding seasons when they blow their undercoat dramatically. Plan for 60+ minutes of daily exercise including long walks, hikes, or pulling activities — they were bred for sustained work and need a physical outlet. Feed a high-quality large-breed formula in two measured meals; they maintain good body condition naturally but can gain weight if under-exercised. Their sensitive, people-focused temperament means training works best with positive reinforcement and short, engaging sessions — they shut down with repetitive drilling or harsh corrections.

Common Health Issues

  • Hip Dysplasia
    Abnormal development of the hip socket leading to joint instability and arthritis, a common concern in large working breeds. Screen breeding stock through OFA or PennHIP, and provide controlled exercise during the rapid growth phase from 4-12 months.
  • Cryptorchidism
    One or both testicles fail to descend into the scrotum, occurring at higher rates in Chinooks than most breeds. Retained testicles carry an increased risk of testicular cancer and should be surgically removed.
  • Allergies
    Environmental and food allergies manifest as itchy skin, hot spots, and chronic ear infections, requiring identification of triggers through elimination diets or allergy testing. Management typically involves avoiding allergens, medicated shampoos, and in persistent cases, immunotherapy or medication.
  • Cataracts
    Clouding of the eye lens that can develop at any age in the breed, progressively impairing vision if left untreated. Annual ophthalmologic exams catch early changes, and surgical lens replacement can restore vision in significant cases.
  • Chinook Seizures (Paroxysmal Dyskinesia)
    A breed-specific movement disorder causing episodes of involuntary muscle contractions that resemble seizures but involve no loss of consciousness. Episodes are typically brief and self-limiting, though frequent occurrences may benefit from anticonvulsant therapy.