This is a paid asset, but now you can download AFRICAN ANIMALS PACK for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
AFRICAN ANIMALS PACK v2.0
This pack includes 6 African animals: crocodile, elephant, hippopotamus, lion and lioness, rhinoceros, zebra.
All models are using a generic rig with in place and root motion animations. All characters have LODs and also specific legacy materials in case you’re targeting older devices.