Let's say we evolved from Lions

[Edwardo Piet]

Are Male Lions immoral for killing children of the new group?

Actual lions?

I'd say it's morally bad but I wouldn't say that they were moral agents. If "ought" implies "can" then it makes no sense to say that they ought to do otherwise if they cannot. However, that doesn't mean that it isn't objectively bad that it happens.

There's morality in the sense of moral responsibility and there's morality in the broader axiological sense. There's right and wrong responsible action on the one hand and then there's good and bad consequences on the other.