Richard Parker's 'Puzzle For Understanding Life Of Pi'

"Life of Pi" is so compelling to read and yet so difficult to truly understand. As I keep looking through the themes of religion vs. animal, I get even more confused. What is the meaning behind the animal story if the human story is true? What is the meaning behind the human story if the animal story is true?
I myself believe that the human story was true and that the animal story was his metaphor for his experiences, but I am yet to figure out what each symbol means in the novel's moral/theme. On another note, I have pieced together the animals in my "Puzzle for Understanding Life of Pi." There is significance as to why Pi (and/or Richard Parker) survived on the boat, while the others perished (hyena, frenchman, Pi's mother, etc.) Here it goes: The hyena represented manliness on one level. He also was a carnivore, which was the essence of his personality. He constantly let his killing instinct drive him.
The hyena was described as disgusting and ugly. The Frenchman/French Cook was also male, and carnivorous, and disgusting. He devoured two human beings and ate practically everything he could get his hands on (like the hyena, again.) Like the hyena, he let his killing instincts drive him and rarely had a chance to pause and think about morals and his terrible
behavior. This made him a very unliked man. Both Frenchman and hyena's fatal flaws were their uncontrolled carnivorous habits.
Orange Juice was a female orangutan (vegetarian) who was known by Pi as a very motherly individual, having two children of her own. Her motherly personality and instincts made her non-violent in nature, observant of other's actions, and introverted, calm and quiet at times. Pi's mother, similarly, was vegetarian and non-violent. She had a religious background of Hinduism. Both mothers had their motherly aggressive moments, but their fatal flaw was their ultimate non-violence and weakness. They could win against their carnivorous counterparts morally, but not physically. The zebra was striped and young and lame. He had a flattened nose, narrow eyes and a broken leg. He was weak and completely helpless on the boat. He was practically mute and was practically still the whole time he was alive. The Chinese sailor was young (about as old as Pi) and had similar features to the zebra, except for the stripes. He was weak and completely helpless and also practically mute. Considering those aspects, both characters were doomed for death the day they fell on the boat. Being completely helpless, they could not sustain life on the boat and fell prey to their surroundings.
Richard Parker was a mix of each animal.
He was carnivorous and male, orange and had stripes. (Possibly a slightly flattened noses and narrow eyes.) While he was carnivorous, he also had a kind, friendly side to him. Most of the time, he was calm and quiet, and very much like the three-toed sloth. He'd regularly 'nap' in a semi-conscious state, watching everybody else. He was fairly young and helpless in many ways, as he depended upon Pi for food during the boat ride. Because of this mix, Richard Parker was feared by the other animals. He was also able to balance 'manliness' with humbleness. Otherwise, Richard Parker could've become very proud and develop an unappealing nature similar to the
hyena.
Pi, like the French cook, became a carnivore on the boat despite being a vegetarian all his life. He developed killer instincts. However, like his mother, Pi came from a religious background (Hinduism), and in his heart, he was spiritual and non-violent. He was also observant and quite calm in nature, constantly resting in deep spiritual thought or watching Richard Parker at a distance. Like the Chinese Sailor, Pi was young and seemed helpless, being only a teen who didn't know all the ways of the world. However, Pi had been educated in the ways of animal behavior, and was prepared to handle the tiger. He taught himself how to build the raft, catch fish, and collect water from solar stills. He wasn't helpless. Pi needed to be aggressive and carnivorous in order to survive. Without it, he would have died in the hands of the French cook, or he'd have died of starvation. However, unlike the cook, Pi had morals and beliefs. He only killed out of necessity, and took notice when he, too, became animalistic. Thus, Pi knew his limits. He was more human than the French cook. His religious roots kept his soul alive-without it, he'd have died. As it said in the book: I turned to G-d. I survived.