Theory

Conformity translates to "the act of matching attitudes, beliefs, and behaviors to what individuals perceive as normal to their society or social group." Why would animals want matching attitudes, beliefs and behaviors? Well, according to Freud civilization is an essential component to survival- and civilization curves a structure and model for attitudes, beliefs and behaviors. This is so, because a higher moral structure helps guide those belonging to that society and culture. It is not only normal to associate with matching behaviors for a civil structure but also natural. In each of our animalistic brains, we have what is called "mirror neurons", these mirror neurons are hardwired into our brain since the beginning of evolution and are for the direct purpose to mirror actions and thoughts and to empathize, but i wont digress with the latter. 
It is in our DNA, our foundation, and in our best interest to conform. For example, conformity is an amazing teacher- if i see someone fishing and they're catching all the fish, as i sit fish-less, it is in my best interest to mirror this man's actions and conform to his fishing techniques.  
As our population grows more and more and conformity becomes increasingly suffocating- culture beings to see conformity negatively and wants to break out. But, we cannot deny the social and natural benefits of this normal condition. And although in certain circumstances conforming may interfere with positive aspects of life- the importance of conformity is unrelenting.