Kodiak bear
An average adult male measures in length, and stands tall at the shoulder. The largest recorded wild male weighed , and had a hind foot measurement of . A large male Kodiak bear stands up to tall at the shoulder, when it is standing on all four legs. When standing fully upright on its hind legs, a large male could reach a height of . The largest verified size for a captive Kodiak bear was for a specimen that lived at the Dakota Zoo in Bismarck, North Dakota. Nicknamed "Clyde," he weighed when he died in June 1987 at the age of 22. According to zoo director Terry Lincoln, Clyde probably weighed close to a year earlier. He still had a fat layer of when he died.
Black caiman
The black caiman is one of the largest extant reptiles. It is the largest predator in the Amazon basin and possibly the largest member of the family Alligatoridae. It is also significantly larger than other caiman species. Most adult black caimans are in length, with a few old males growing larger than . Sub-adult male specimens of around will weigh roughly , around the same size as a mature female, but will quickly increase in bulk and weight. The average size of adult females at their nests was found to be . Mid-sized mature males of weigh approximately , while larger specimens easily exceed , being relatively bulky crocodilians. A relatively small adult male of a total length of weighed while an adult male considered fairly large at a length of weighed approximately . Another sampling of subadult males found them to range in length from , averaging , and that they weighed from , averaging . The black caiman broadly overlaps in size with the American alligator ("Alligator mississippiensis"), although it is on average larger at maturity. In some areas (such as the Araguaia River) this species is consistently reported at in length, much larger than the alligator (which rarely even reaches 4 meters), although specimens this size are uncommon. Several widely reported but unconfirmed (and probably largely anecdotal) sources report that the black caiman can grow to over in length and weigh up to . While it is unclear what the source for this maximum size, many scientific papers accept that this species can attain extreme sizes as such. In South America, two other crocodilians reportedly reach similar sizes: the American crocodile ("Crocodylus acutus") and the Orinoco crocodile ("C. intermedius").