A King Kong size mammal that really lived

Ewalt (2005) adds, though, that giraffes are tall and thin-legged but functional and gives Kong some hope, but there he fails to consider weight.  Giraffes weigh 1,5 ton, while Kong would weigh more than 20 ton (Ewalt, 2005), thus I rather agree with Valdron (2005) who wrote that if Paraceratherium (Indricotherium) bugtiense not only lived but colonized much of Eurasia with a weight of 20 ton and normal-width legs (see Clauss, et al., 2003), Kong could indeed walk well. Having to choose between mathematical calculations and real organisms, I always choose the later. Even Galileo got his hellish calculations wrong the first time (Fisher, 2011).

Source: Wikipedia

Additional questions about Kong’s size relate to why gorillas would grow so much, and if they could find enough food.

The most common ecological causes of gigantism are cold weather and protection from predators. The tropical climate of the island limits us to the option of protection, and even though this probably never crossed the minds of King Kong’s writers, the sole presence of Tyrannosaurus is enough to explain such a need. The second question is harder to answer, could Kong find enough food?