Biggest Animals in the World

Giant Mutant Cows of Belgium This enormous Belgian cow got its huge size and muscle mass from natural mutation of the gene or sometimes called double muscling, which results in accelerated lean muscle growth.Worlds Biggest Dog Hercules, an English Mastiff is currently known as the biggest dog in the Guinness Book of World Records, weighing in at 294 lbs (133 kg). Worlds Tallest Dog Certified by