General terms:
* Wild animals: This is the most basic and straightforward term.
* Large animals: This emphasizes their size.
* Megafauna: This specifically refers to large animals, especially those that are extinct or endangered.
Specific terms:
* Big game: This refers to large wild animals hunted for sport.
* Wild beasts: This implies a powerful and dangerous nature.
* Creatures of the wild: This evokes a sense of wonder and untamedness.
More specific terms based on habitat:
* Wild animals of the jungle: For animals found in tropical rainforests.
* Creatures of the savanna: For animals found in grasslands.
* Wild inhabitants of the wilderness: For animals in general wild areas.
The best term will depend on what you are trying to convey.