Secular Humanism and Humanity: What are they?

[watchamadoodle]

Sorry if this has been covered in an earlier post, but what are the real-world scenarios where the meaning of human is in question?
- Machine intelligence?
- Mentally incapacitated?
- Intelligent animals such as cats, dogs, parrots, dolphins?
- ET intelligence?
- ... what else?

Maybe we can define a human to be anything that is capable of being ethical and moral without religion or a god?

Also it seems that we need a gradated definition of human that assigns moral responsibility to the most intelligent and powerful intelligences, but assigns rights much more broadly?

Here is the definition of secular humanism:

Secular Humanism posits that human beings are capable of being ethical and moral without religion or a god. It does not, however, assume that humans are either inherently evil or innately good, nor does it present humans as being superior to nature. Rather, the humanist life stance emphasizes the unique responsibility facing humanity and the ethical consequences of human decisions. Fundamental to the concept of secular humanism is the strongly held viewpoint that ideology—be it religious or political—must be thoroughly examined by each individual and not simply accepted or rejected on faith. Along with this, an essential part of secular humanism is a continually adapting search for truth, primarily through science and philosophy. Many Humanists derive their moral codes from a philosophy of utilitarianism, ethical naturalism, or evolutionary ethics, and some, such as Sam Harris, advocate a science of morality.

https://en.wikipedia.org/wiki/Secular_humanism