The Blue whale is the heaviest mammal, weighing between 130,000 and 150,000 kg, and can live for over 200 years.
Polar bears weigh approximately 1,760 pounds; they have thick fur and fat layers to survive cold Arctic environments effectively.
Saltwater crocodiles weigh about 1.45 tons; they are formidable predators, consuming a wide range of prey in their habitats.
Hippos are semi-aquatic mammals weighing around 4.5 tons; they possess powerful teeth and are considered among the world's most dangerous animals.
Rhinoceroses weigh approximately 4.5 tons; Indian rhinos are lighter at about 4 tons, while black rhinos weigh between 2.3 and 2.9 tons.
Elephants are the largest land animals, weighing between 11.5 and 12.25 tons
Despite its name, the whale shark is the largest fish, reaching weights of around 20 tons while feeding on plankton.