Today, animal gigantism mostly occurs on islands, where the animals are isolated from the colonies on the mainland. Animals inhabiting islands have fewer predators and often more resources for food and water.
The Giant Mekong Catfish Is Endangered
This enormous horse named Windermere's North American Maid (a.k.a. Moose) is a draft horse and Percheron supreme world champion.
Titan longhorn beetles live in the rainforests of South America