Makes me think of THE LION of Judah! Then one of the elders said to me, "Do not weep! See, the Lion of the tribe of Judah, the Root of David, has triumphed. He is able to open the scroll and its seven seals" Rev.
This picture I think fits Richard Parker, because the quote says "We all have a fighter in us" and obviously he is a predatory animal, but under the circumstances of being stranded in the life boat, he has to fight for his life and continue to stay alive.