What is Tok?

Is knowledge exclusive to humans? how can anyone determine who has knowledge and who doesn't? Knowledge doesn't make human being superior, so how can any human being decide if they are the only ones capable of having knowledge if human knowledge is limited by a very important and insignificant factor that is language. is this determined by human arrogance? doesn't this make it become subjective? Are we born with knowledge or like animals do.. do humans learn how to have a knowledge? 

Humans are not the only ones capable of knowledge, every linving organism has a bit of knowledge.