Do you think spirit of human being and spirit of animal are very different?
Yes very different. And when we say spirit I would assume we understand the decisions of heart and brain as decisions of the spirit as there won’t be a difference between spirit and body then. The simple explanation would e that man has achieved much more than any animal. We have learnt from animals and developed machines, strategies, weapons, etc. and bettered the animals themselves. Superior being or not is a different question, but better, Yes !