The Saint Bernard is unmistakably a giant dog, and the first thing most people notice is sheer mass. A fully grown male in good condition typically weighs somewhere between 140 and 180 pounds and stands 28 to 30 inches at the shoulder, though larger individuals are not uncommon. Females are meaningfully smaller, usually 26 to 28 inches and 120 to 140 pounds, but still represent a substantial animal by any measure. The breed has a look of powerful solidity - these are not lean or rangily built dogs. They carry significant bone, deep chest, and heavy musculature in a package that conveys both strength and a certain unhurried dignity.
The head is the most distinctive physical feature of the Saint Bernard and the element most scrutinized in the show ring. The skull is massive and broad, with a slightly arched, not domed, crown and a well-defined, abrupt stop. The muzzle is short relative to the skull length, broad, and slightly turned up at the end. The wrinkled brow is characteristic and contributes significantly to the breed's expression. Jowls are heavy and the lips fall loosely over the lower jaw. The nose is large and black with well-open nostrils.
The eyes are medium-sized, set more to the front than to the sides, and should be dark brown with a friendly, intelligent expression. The lower eyelid naturally shows a small amount of haw - that slightly exposed inner lid tissue - which is considered normal for the breed but becomes a liability if it collects debris or leads to chronic irritation. Entropion, where the eyelid rolls inward, and ectropion, where it sags outward, are both documented problems in the breed and represent the consequences of the loose facial skin that otherwise gives Saints their characteristic expression.
Ears are medium-sized, set high on the skull, and fall forward against the cheeks when at rest. They are well-covered with short, soft hair. The ear leather is moderately thick and rounded at the tip. When the dog is alert, the base of the ear may rise slightly while the leather continues to hang forward.
The neck is strong, thick, and moderately long, rising from well-laid-back shoulders with a slight arch at the crest. There is a pronounced dewlap under the throat. The body is broad and powerful throughout - a deep, well-sprung chest, well-muscled loin, and a strong, level topline from withers to croup. The back should not be roached or soft. The croup slopes gently to the tail set.
The tail is long, heavy, and well-boned, reaching to the hock or slightly below. It is carried low when the dog is relaxed, with the last third curving slightly upward. When moving or alert it may rise to horizontal but should not curl over the back. The tail is heavily covered with dense hair and can be a remarkable sweeping appendage on a longhaired specimen.
Forequarters have well-developed shoulders with good layback, straight strong legs, and firm, arched feet with tight toes. The hindquarters show good angulation with well-muscled thighs, moderate bend of stifle, and well let-down hocks. Rear dewclaws should be removed. Movement is powerful and free, with good reach in front and strong drive behind. The gait should cover ground without appearing labored, with the back remaining level and the head carried in a natural position.
The breed comes in two coat varieties. The smooth coat is dense, short, and flat-lying with a thick undercoat. It feels somewhat coarser than it looks and provides excellent weather protection. The longhaired (rough) coat is medium length, slightly wavy but not curly, with feathering on the thighs, forelegs, and tail. The longhaired variety tends to be more popular with pet owners, though the smooth variety was historically preferred by the hospice monks because snow and ice cling to long coats and become a burden in deep Alpine conditions.
Accepted colors are white with red or mahogany-brindle markings, or red and mahogany with white markings. The distribution of color varies, but white markings are expected on the muzzle, blaze, collar, chest, feet, and tip of the tail. A dark mask and shading on the face and ears is desirable. Brindle patches mixed with the red or mahogany are acceptable. A truly plain red dog without white, or a dog that is predominantly black, would be outside the standard.
Sexual dimorphism is pronounced. Males carry substantially more bone, breadth of head, and overall mass than females, and an experienced eye can usually distinguish them at a glance even in photographs. A correct male should look unmistakably masculine; a correct female should look feminine without appearing slight. Both should convey the same combination of power and benevolence that defines the breed's ideal expression.
Affectionate With Family
★★★★★
Saint Bernards are devoted family companions who bond deeply with their people and genuinely enjoy being included in household life. They are not dogs who prefer their own company - they want to be near you.
Good With Young Children
★★★★☆
Saints are famously patient and tolerant with children and carry a gentle, almost instinctive caution around small people. The main concern is size - an enthusiastic Saint Bernard can knock a toddler flat without any bad intent.
Good With Other Dogs
★★★★☆
Saint Bernards are generally easygoing with other dogs and rarely pick fights. Their sheer mass means even playful interactions require monitoring so smaller housemates don't get accidentally bulldozed.
Shedding Level
★★★★☆
Both coat varieties shed significantly, with the longhaired variety leaving more dramatic evidence on furniture and clothing. Twice-yearly coat blows produce truly impressive volumes of hair.
Coat Grooming Frequency
★★★☆☆
The smooth coat needs weekly brushing and targeted attention during shedding season. The longhaired variety needs brushing several times a week to prevent tangles, especially behind the ears and on the chest.
Drooling Level
★★★★★
Saint Bernards drool - the Saint Bernard Club of America is blunt about this in their own breeder materials. The loose, heavy flews of the breed produce constant saliva, and you will want a dedicated drool rag near every door.
Coat Type
★★★☆☆
The smooth coat is a dense, flat double coat that is easier to manage than it appears. The longhaired (rough) coat is longer and slightly wavy with feathering on the legs and tail, requiring more consistent grooming attention.
Openness To Strangers
★★★★☆
Saints are friendly and welcoming toward strangers by nature, which is part of why the SBCA explicitly states they are not guard dogs. A Saint Bernard who is shy or aggressive toward unfamiliar people is a fault in temperament.
Playfulness Level
★★★☆☆
Saint Bernards have a calm, laid-back nature and are not especially playful compared to high-drive working breeds. They enjoy moderate interaction and have a puppy phase that lasts longer than you might expect given their size.
Watchdog/Protective Nature
★★★☆☆
A Saint Bernard's sheer size is a deterrent, and they will alert to unusual activity. However, they lack the territorial edge of a true guardian breed and should not be expected to fill that role.
Adaptability Level
★★☆☆☆
Saint Bernards are poorly suited to hot climates and small living spaces. They need room to move, cannot tolerate heat, and do best with access to outdoor space even though their exercise needs are moderate.
Trainability Level
★★★☆☆
Saints are willing and want to please, but their large size means a slow-to-learn Saint is a real management problem. Starting basic manners early - before they are 100 pounds - is essential, not optional.