The Saint Bernard does not rank very high in AKC registrations, but the genial giant of the Swiss Alps is nonetheless among the world's most famous and beloved breeds. They are famously watchful and patient 'nanny dogs' for children. A male stands a minimum 27.5 inches at the shoulder; females will be smaller and more delicately built. The huge head features a wrinkled brow, a short muzzle, and dark eyes, combining to give Saints the intelligent, friendly expression that was such a welcome sight to stranded Alpine travelers.
References:
https://www.akc.org/