The St. Bernard is a large dog breed known for its gentle temperament and impressive size. Originally bred in the Swiss Alps for rescue work, these dogs are famous for their ability to locate and save lost travelers in snowy conditions. They typically weigh between 110 to 200 pounds and have a thick, water-resistant coat that helps them withstand cold weather. St. Bernards are friendly, affectionate, and great with families, making them excellent companions. Despite their size, they are known for being calm and patient. Regular exercise and socialization are important to keep them healthy and well-adjusted.