@Loosf There are many examples of that strategy in nature and not just within a species, or even kingdoms (or whatever it's called now). Lichen's a great example, a fungus and a plant working together. Even more fundamental are chloroplasts and mitochondria (and potentially other organelles), both of which used to be independent single-celled organisms, but became integrated inside another one which enabled them to become parts of at least two entire kingdoms of life.