Every human is a person, right? And anyone we call a person must be a human, correct?

Well, no, not necessarily.

If you accept the proposal that great apes ought to be regarded as persons, then our chart looks like this:

Another group of animals also might deserve consideration as persons, namely Cetacea (whales, dolphins, and porpoises).

Transhumanists expect that at some point during this century—possibly within just a few decades—a new set of sentient beings, not entirely biological in origin, will emerge. These ‘cyborgs’ might include robots with artificial brains, humans with significant cognitive or other enhancements, or even computer-based lifeforms. Perhaps not all cyborgs will deserve to be defined as persons, but certainly some will. Thus we have: