Breed comparison
Leonberger vs Bernese Mountain Dog: two gentle giants from the Alps
Both breeds are enormous, calm natured mountain dogs bred for farm work in the Alpine regions of Germany and Switzerland, and both are famous for a sweet, patient temperament that belies their size. The Leonberger is the taller, heavier and longer lived of the two, while the Bernese Mountain Dog carries a shorter average lifespan that every prospective owner should understand going in.
Last updated 23 September 2026 · How we write and check this
| Leonberger | Bernese Mountain Dog | |
|---|---|---|
| Weight | 41 to 77 kg | 34 to 50 kg |
| Height | 65 to 80 cm | 58 to 70 cm |
| Life expectancy | 7 to 9 years | 7 to 10 years |
| Daily exercise | 60 to 90 min | 60 to 90 min |
| Energy | 3 / 5 | 3 / 5 |
| Easy to train | 4 / 5 | 4 / 5 |
| Shedding | 5 / 5 | 5 / 5 |
| Good with children | 5 / 5 | 5 / 5 |
| Apartment friendly | 1 / 5 | 1 / 5 |
Size and coat
The Leonberger weighs 41 to 77 kg (90 to 170 lb) and stands 65 to 80 cm (26 to 31 in), among the largest popular breeds, with a lion like mane most pronounced in males and a water resistant double coat.
The Bernese Mountain Dog weighs 34 to 50 kg (75 to 110 lb) and stands 58 to 70 cm (23 to 28 in), slightly smaller than the Leonberger, with a striking tricolor coat of black, rust and white and a thick, moderately long double layer.
Grooming and shedding
Both breeds shed heavily year round with a dramatic seasonal blowout, and both need brushing two to three times a week rising to daily during shedding season to manage the sheer volume of loose hair.
The Leonberger's coat is a touch longer and denser overall, so grooming sessions typically take a little more time than the Bernese, though both breeds are a serious daily and weekly commitment either way.
Temperament
Leonbergers are calm, patient and famously good with children, scoring at the top for gentleness despite their imposing size, and settle well into family life once past an energetic puppyhood.
Bernese Mountain Dogs share that same gentle, affectionate nature and score equally high with children and other dogs, often described as having an almost comical devotion to their family that persists throughout their life.
Exercise and space needs
Both breeds have moderate energy for their size and need 45 to 60 minutes of daily activity, but their sheer bulk means neither is suited to apartment living, and both need a real yard and space indoors to move comfortably.
Cold weather suits both breeds well given their heavy coats, but summer heat is genuinely difficult for either dog, so exercise should shift to cooler parts of the day once temperatures climb.
Health and lifespan
Leonbergers live just 7 to 9 years, a short lifespan for the emotional investment such a large, devoted dog demands, and are prone to hip dysplasia, bone cancer and a bloat risk common in deep chested giant breeds.
Bernese Mountain Dogs have an even more sobering average lifespan of 7 to 10 years, with a notably high rate of cancer that has become a serious concern for the breed, alongside hip and elbow dysplasia that responsible breeders screen for.
Cost and daily practicalities
Both breeds are expensive to keep well fed and groomed given their size, and pet insurance premiums tend to run higher for giant breeds with known cancer risks like these two.
A slow feeder or raised bowl setup is worth discussing with a vet for either breed, since deep chested giant dogs carry a real risk of bloat, a life threatening emergency that eating too quickly can contribute to.
Choose the Leonberger if
- Prefers the taller, heavier of the two breeds
- Comfortable with a slightly longer, denser coat to groom
- Wants the classic lion maned appearance
- Fine with a marginally longer average lifespan
- Interested in the breed's Alpine working dog history
Choose the Bernese Mountain Dog if
- Prefers a slightly more compact giant breed
- Drawn to the distinctive black, rust and white tricolor coat
- Comfortable with a somewhat shorter but still substantial grooming routine
- Interested in the breed's Swiss farm dog heritage
- Fine with a breed that has an especially devoted, family focused reputation
Which breed lives longer, the Leonberger or the Bernese Mountain Dog?
Neither breed lives especially long for a dog, but the Leonberger has a slight edge, typically reaching 7 to 9 years compared with 7 to 10 years for the Bernese, though individual dogs vary and the ranges overlap considerably.
Are Leonbergers or Bernese Mountain Dogs prone to cancer?
Yes, both breeds carry an elevated cancer risk compared with many other breeds, and this is one of the main factors behind their shorter average lifespans. Choosing a breeder who health tests thoroughly and screens family history for cancer can help, though it cannot eliminate the risk.
Do Leonbergers or Bernese Mountain Dogs do well in hot climates?
Neither breed handles heat well given their heavy double coats, and both need shade, water and reduced exercise during warm weather. A cooler climate or air conditioned home suits either breed considerably better than a hot one.
Which breed is better with children, the Leonberger or the Bernese?
Both breeds are exceptionally gentle and patient with children, consistently ranking among the most child friendly giant breeds. The choice between them usually comes down to coat color preference and slight differences in size rather than temperament.