well, the most common error at animal pack, are people don't use the object file.
try this:
copy all WombatAnimalPack files in to FeralHeart\media\objects\my_objects, except WombatAnimalPack.object.
copy WombatAnimalPack.object in to FeralHeart\media\objects.
then at object/map maker, you will see a new group called WombatAnimalPack, when you use it, you will see the models with textures.
at food pack, you need to put the materials names manually, if you don't know how, ask here.