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St. Bernards are very gentle giant dogs. St. Bernards are often fond of children and are loyal to their family, but, as with any dog, should not be left unsupervised with young children. It is imperative that St. Bernards should also remain very socialized because of their size. They are also very prone to anxiety if left alone for long periods of time and may destroy their owner's belongings like all other dogs. It is recommended that a suitable safe environment be made available during times that the owner cannot be home. This could range anywhere from a fenced yard to a suitably sized crate (normally Extra Large). They commonly get along very well with other dogs and love high amounts of attention.

Even though they can usually be seen lounging around the house, that's not all they do. Depending on the dog, they like to dig, and are capable of jumping over fences. Before you consider bringing this type of dog into your house, make sure you have lots of room for them to run, and a sturdy fence that they can't jump over, or dig under.