The blue whale.
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.)
I think the heaviest kid in the world is Jessica
The second heaviest bird in the world is the Southern Cassowary.
Humpback Whales are not the heaviest whales in the world but there one of the heaviest whales in the world they would get a 3rd place on weight
The African elephant is the world's heaviest land mammal
SW - This can't be true! What about all the other whales? The second heaviest animal in the world is an African elephant, The heaviest being a Blue whale at 190tonns
The world largest and heaviest animal is the Blue whale weighing in at 418,878 lbs (190,000 kg)
The blue whale. The heaviest blue whale measured at about 418,878 pounds.
The anaconda is recognised as the heaviest species.anaconda is the heavies species of snake in the world
The Capybara
Bible
Anaconda