Many people do, in fact, treat their animal companion as a child.
Anatomically modern humans first appear in the fossil record in Africa about 195,000 years ago, and studies of molecular biology give evidence that the approximate time of divergence from the common ancestor of all modern human populations was 200,000 years ago...
To be honest one can not compare a pet (even a loved one) to that of a child or other human being. If you do you are being 'abnormal'.
Secondly I am not disputing 'early' life-forms.
What we have to consider are persons like ourselves with whom one can consciously communicate in order to make sense . According to the Bible Adam and Eve were the first such people. Though other life-forms and creatures existed before them sensible mental communication would have been unlikely. A & E can give us 'feed-back' and speak in our own language .
I am not talking about scientists or deep research which is beyond the understanding of most common people (of which I am one). God clearly says he is starting with 'unlearned' people who lack certain mental abilities - so THEY are not left out of his plan and purpose for mankind. He just requires our faith in him and not inellect.