Wilderness Expansions + Is a mod that will add new animals, biomes, and items to your Minecraft mod including hyenas, leopards, elephants, cheetahs, tigers, ostriches, and lions (there are more but I don't wanna list ALL of them). We are currently searching for a coder that knows how to code features we are planning including pouncing, "struggling" poses when certain animals get pounced, new taming items, new plants/trees, certain numbers of animals evading or defending each other, sitting poses when tamed, genders, and natural spawning. We currently have a coder but he is more focused on solving issues with his own mod and says he will lay out the basic AI for now. Here's the Discord page, please do join if you wanna watch the development of the mod or if you are a coder that can do what was suggested above. In my mod's first beta, I would like to introduce 3 mobs: Lion, Spotted Hyena, and Topi which would spawn on the savanna.
NOTE: All the images are concept are of the planned poses and pouncing for the animals and none of these are coded.