Dragons have a literal fire in their belly, and something needs to keep that fire burning. In this case, it's the corpses of animals. In order to keep flying, you need to have a full stomach, so make sure to keep eating birds and other creatures that fly in the sky, but also grab sheep and people that will be on the ground. You can continue to explore different paths in this Metroidvania-style game world and as you grow and eat, even more will open up.
