The heaviest dog ever was a Saint Bernard (named Benedictine) weighed in at an astonishing 167kg, stood  at the shoulder and was  from the tip of his nose to the tip of his tail and currently holds the record as the heaviest dog of all time.
The biggest dog ever documented was a Saint Bernard (named Benedictine) that weighed 167kg and measured from its nose to tail tip, setting a new standard for canine size. This enormous dog currently holds the record for being the heaviest dog in history.