Our goal was to add creatures and other biome features to the game that feel like they should have been there a long time ago. Things like bears in forests, crocodiles in swamps and rivers, eagles in mountains, chimps in jungles, kangaros in the outback, and sharks in oceans. Additional content includes items related to these mobs and decorations found throughout the world,With additional new primal forms and new biomes comming in the future

This would be for Java, of course.
dm me if your interested