Let's say we evolved from Lions

[Edwardo Piet]

The moral code of the lion people would be morality in the sense of a moral code but it wouldn't be morality in the sense of actually moral. Morality is on a spectrum, and any society can have a moral code but the fact that some societies and some individuals and some actions are more moral than others is what makes morality objective in the first place. There is a right and wrong answer to moral questions and killing your children isn't moral regardless of what society, individual or, indeed, species, thinks it is.