I don't know if this has already been pitched but Imma still pitch it.

Whenever a lioness goes on hunts there is a chance they can bring back skulls or feathers along with the prey. I think this would be nice add on to the hunting.
Whenever you eat the prey there is a small chance you can receive a skull. Since you can clearly see the animals in this game have currency then the idea of females bringing something to make nests isn't preposterous.

-EDIT-
They could just find random items along with it. They wouldn't JUST try to find food.

This is just an idea that can be fixed and critiqued, so no one get their panties in a knot.