What distinguishes people and animals, what makes a human into a person?

But not all people are able to formulate and ask the question. I would wager that most humans do not.

The must be some kind of difference between the word human and person. Human the same as Homo sapiens, as if its simply tag for our species. Of course we’re all human. I think even Singer would agree.

But when do we attain personhood? At conception? At Birth? at 1 month? Is a comatose human a person? AND

Has an animal ever achieved personhood?

Hope this will be a springboard for new ideas. All are of value.