I agree, you need to define "True living species"
True = Real without doubt
Living = having life, alive, but perhaps not in the strictest sense.
Species = A category of animals or plants.
If, hypothetically, you mean a being that is self aware, motivated by logic and emotions without any of the self-destructive or abusive tendencies that a lot of humans have. Able to realize it's mistakes, flaws and correct or modify it's behavior. Able to offer contributions in a creative fashion and conduct itself in a decent manner as well as have a perfect grasp of human language, concepts, emotions and behaviors.
Then, sure...by all means develop it and bring it forth for it will no doubt, benefit humankind.