* African elephant (Loxodonta africana): Males can weigh up to 15,000 pounds (6,800 kilograms)
* Asian elephant (Elephas maximus): Males can weigh up to 12,000 pounds (5,400 kilograms)
* Blue whale (Balaenoptera musculus): Can weigh up to 400,000 pounds (180,000 kilograms)
* Fin whale (Balaenoptera physalus): Can weigh up to 200,000 pounds (90,000 kilograms)
* Humpback whale (Megaptera novaeangliae): Can weigh up to 80,000 pounds (36,000 kilograms)
* North Atlantic right whale (Eubalaena glacialis): Can weigh up to 100,000 pounds (45,000 kilograms)
* Sei whale (Balaenoptera borealis): Can weigh up to 100,000 pounds (45,000 kilograms)
* Sperm whale (Physeter macrocephalus): Can weigh up to 150,000 pounds (68,000 kilograms)
* Southern elephant seal (Mirounga leonina): Males can weigh up to 8,800 pounds (4,000 kilograms)
* White rhinoceros (Ceratotherium simum): Males can weigh up to 8,000 pounds (3,600 kilograms)
Pandas, on the other hand, typically weigh between 220 and 350 pounds (100 and 160 kilograms).