The largest and heaviest dog ever documented was an English Mastiff named Aicama Zorba of La-Susa. A colossal canine titan, Zorba, a proud British icon, stood a staggering 37 inches at the shoulder and weighed over 343 pounds. His immense size cemented his legendary status in record books. While breeds like St. Bernards and English Mastiffs are famed for their bulk, the title of tallest dogs often goes to the awe-inspiring Great Danes and noble Irish Wolfhounds, whose breathtaking heights captivate dog enthusiasts around the globe.