The Saint 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 assist 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. Saint Bernards are friendly, affectionate, and great with families, making them popular pets. They require regular exercise and grooming due to their size and coat. Despite their imposing appearance, they are known for their calm demeanor and loyalty to their owners.