if you are interested I have good article for you listing some differences between humans and animals http://staffwww.dcs.shef.ac.uk/people/A.Sharkey/2008-darwin....
Re:No One Knows Why Humans Can Walk
by hyperpallium on Thursday October 17, 2019 @08:05AM
(#21281104)
You can argue for their intelligence, but they can't argue for yours.
Are other animals not intelligent? Are you sure we are intelligent?
I guess that the difference between apes and humans would be minuscule to the outside observer.