I think it is blue whale.
I hope this helped. ^_^
The African elephant is the world's heaviest land mammal
Elephant
The blue whale is the world's largest and heaviest living mammal. The largest "land" mammals are elephants and hippos, with African elephants being the heaviest. (Like whales, hippos use the buoyancy of water to offset their great mass, and can move easily in rivers and ponds.)
Elephants! To be specific, the African Bush elephant is the heaviest land mammal. The females weigh about 10,000 lbs (4,535 kilograms) and the males can get up to 15,000 lbs (6803 kilograms). Although the largest one recorded in history was 27, 060 lbs (12,274 kg). If you are looking for water mammals as well, the blue whale is the heaviest at a weight of 190 tons, possibly more. It is said to be the largest animal in history.
Fin Whale (Balaenoptera physalus)
Diplodocus
The heaviest is the Blue Whale and the lightest is the Pigmy Shrew
The largest brain and heaviest brain (17.5 lbs) belongs to the sperm whale.
The largest mammal on earth is the blue whale, which can weigh up to 200 tons, which makes it the heaviest known animal to have ever lived.
No, the snow leopard is not even a reptile, it's a mammal.
The state water mammal is the bottlenose dolphin. And the land mammal is a white-tailed deer.
No, it is a land mammal.