Ive seen a couple of people mention this, but I figure the more that do, the more likely it would be implemented: It would be amazing if animals like zebras, giraffes, etc. could eat grass and plants to partially fill their nutrition, it would add a bit of realism to the game, and would make it possible to create a more natural experience for the guests and animals. I dont think it would be too hard to implement, as the habitats already keep track of how much grass and foliage is in a habitat, so there could be a nutritional value added to them, im not a programmer, but it seems like the foundation is there to implement this kind of mechanic. It would improve the fun of the game for me a lot, because I really want to be able to create a large nature preserve (conservation is an important aspect in the game after all) and this isnt possible in the game at the moment.