On the other hand , the opposite opinion hold by some people is that we should treat animals as our friends for the continuing development and ration ( and mercy ) of us，which we boast as that we are the most intelligent living in the planet .
On the other hand , the opposite opinion held by some people is that we should treat animals as our friends for the continuing development and ration ( and mercy ) of us , which we boast that we are the most intelligent living on the planet .