How did saint bernards become life savers?

Saint Bernards became life savers due to their remarkable sense of smell and strength, which made them ideal rescue dogs in the treacherous Alpine regions. Initially bred by monks at the Hospice of Saint Bernard in Switzerland for assistance in navigating snowy conditions, they were trained to locate and rescue travelers lost in avalanches. Their natural instincts and ability to endure harsh weather conditions enabled them to save countless lives over the years, solidifying their reputation as heroic rescue dogs.