The lion is exhibiting the human characteristic of arrogance. The quality of arrogance is associated with pride and boastfulness. It displays the quality of having full of one's own abilities and importance.
An arrogant person thinks that no one is worthy of him and that he is the best of all. He/she is opinionated and does not consider other's opinion. He/she thinks and acts according to his/her wishes.
Similarly, the lion feels and acts in the same arrogant manner. The lion thinks of himself as the best and that no one can tell him what to do.
