Question

Why is human being called a social animal?

Answer 1

Not all humans are "social" animals. There are a few "lone wolves" among us.
  Social attraction may be the consequence of Homo Sapiens being essentially a pack animal. Either out of protection, security or hunting success, humans discovered the benefits of social interaction and cooperation. Most likely part of our hominid evolutionary line. 
  Social interaction was a positive endeavor that became even more enhanced once permanent communities were established.
  However, with all the pressures coming from far too many social inter-actions of modern life, more and more individuals are choosing to somewhat withdraw to the privacy and protection of their home environments. What this augers for the future remains to be seen.

Answer 2

Answer:

Thoughts, feelings and emotions seperate humans from animals. This makes us different.

Explanation:

Animals can not show emotions like we do. Humans are totally dependent on the society for all their needs. We have families that too in generations, we organize gatherings, we organize and celebrate festivities, share our mishappenings and joys with the society. We earn, work and contribute to the society. Some are doctors that treat others, some are teachers, some are here to protect us and some govern us thus making it a complex structure. This social system has helped us survive, evolve and become better with time, comeup with new invenstions. Humans can hardly survive without a society.