Chinook
| Size at withers | 53-69 cm |
|---|---|
| Weight range | 25-40 kg |
| Life expectancy | 12-15 years |
| Size class | Large (25–40 kg) |
| Normal resting vitals | Heart rate 60–110 bpm · Respiration 10–30/min · Temperature 38.3–39.2 °C |
| Temperament | Gentle, calm, friendly; devoted family dog and willing worker, not aggressive |
| Common health issues | Generally healthy; hip dysplasia, epilepsy and cryptorchidism tracked by the breed |
| Exercise needs | High - 60-90 min/day |
| Climate & housing suitability | Moderate at best - a moderate double coat gives some tolerance, but it remains a cool-climate sled dog that struggles in sustained heat. |
| Owner notes | The US state dog of New Hampshire; one of the rarest breeds, nearly extinct in the 1980s. |
Origin and purpose
Sled dog; UKC/AKC. Origin: New Hampshire, USA; rare drafting and sled dog.
The US state dog of New Hampshire; one of the rarest breeds, nearly extinct in the 1980s.
What a breed was built to do explains most of what it will do in your home. A dog selected for hundreds of years to run, guard, herd, or hunt does not stop wanting to because it now lives in an apartment — the drive is the breed, and the owner's job is to give it somewhere to go.
Temperament and training
Stated temperament: Gentle, calm, friendly; devoted family dog and willing worker, not aggressive
Reward-based training from the day the puppy arrives, with the socialisation window (roughly three to sixteen weeks) treated as the priority it is — what happens in those weeks shapes the adult dog more than anything you do later. Short, frequent, positive sessions. See Parts IV and IX.
Conditions this breed is predisposed to
Idiopathic epilepsy
Cryptorchidism
Hip dysplasia
Health screening — what to test, and when
| Screen for | Test | When |
|---|---|---|
| Cryptorchidism | Physical examination of the puppy | By 6 months; a retained testicle should be removed — it is a cancer risk |
| Hip dysplasia | Radiographic hip evaluation (hip scoring) | Once at 12–24 months; earlier if lame |
| Idiopathic epilepsy | No screening test. Diagnosis is by exclusion, after blood work and imaging | Investigate the first seizure; do not breed from affected dogs |
Every dog, every breed: an annual health examination (twice yearly from seven years), body-condition scoring at each visit, dental assessment, year-round parasite control, and the core vaccinations.
For breeders — test before you mate
- Cryptorchidism — Physical examination of the puppy
- Hip dysplasia — Radiographic hip evaluation (hip scoring)
- Idiopathic epilepsy — No screening test. Diagnosis is by exclusion, after blood work and imaging
Feeding
Growth is the thing that matters. Large-breed puppies must be fed a diet formulated for large-breed growth and must NOT be overfed or supplemented with calcium — growing too fast is a direct route to the joint disease this size of dog is already prone to. A lean puppy is a healthy puppy. As an adult, two measured meals a day, and keep the dog lean for life: excess weight is the single biggest accelerator of hip and elbow disease and arthritis.
Exercise and enrichment
Stated requirement: High - 60-90 min/day
A high-energy dog needing substantial, committed daily exercise plus mental work. Do not take this breed on unless the daily commitment is realistic on your worst week, not your best one.
Climate and living conditions
Stated suitability: Moderate at best - a moderate double coat gives some tolerance, but it remains a cool-climate sled dog that struggles in sustained heat.
Ageing and senior care
Life expectancy: 12-15 years. This dog is a senior from around 7 years, at which point wellness examinations should move to twice a year and senior blood and urine screening begins. Large dogs age faster than small ones. Arthritis and cancer are the dominant concerns; do not dismiss a limp in an older large dog as 'just age' — bone cancer presents exactly that way. Senior care →
Before you take one home
- Ask the breeder for the health-test results listed above — for BOTH parents, on paper, before you pay a deposit. A breeder who has done the tests will be proud to show you; one who deflects, or who tells you the tests are unnecessary in this line, is telling you what you need to know.
- Consider adoption. Shelters and rescues have dogs of every kind, including purebreds, and the local native or landrace dog is often healthier, better adapted to its climate, and more in need of a home than almost anything you can buy. See Part XII.
