The heaviest land mammal is the African bush elephant which has a weight of up to 5.4 …
Out of numerous animals on earth, elephant is the largest mammal on land and here are 10 heaviest mammals which are land mammals. The blue whale is the largest mammal that ever lived, including dinosaurs. The 20 Biggest Mammals, Ranked by Category. Biggest Whale: Blue Whale (200 Tons) Biggest Elephant: African Elephant (7 Tons) Biggest Dolphin: Killer Whale (6 to 7 Tons) Biggest Even-Toed Ungulate: Hippopotamus (5 tons) See the weight and size facts.