Planting veggies for animals?

When we plant seads, nuts, grains, fruits, veggies, etc., for ourselves, we should also plant some for the animals as well, or how and where would they find vegetable food to eat, particularly since they can't grow themselves. We should also leave lots of hay and grass for them to graze upon. When people think that what kind of a God made the lion or the meat eating animals, is it not possible that Gods never made them that way but they became carnivores for want of vegetable food over time, only the grass eaters didn't as grass is abundant and easy to find. What do you think?