Dawn breaks and it starts raining harder, but then it suddenly stops. Pi warms up and takes stock of his situation. He recognizes that his raft is too flimsy to last long. He thinks of his plan to outlast Richard Parker, but then remembers that tigers can drink salt water, and he realizes that if Richard Parker gets hungry he will just swim over to the raft and kill Pi.
In terms of survival instinct and brute strength, Pi has no chance against a wild animal. He must use his human resourcefulness and intelligence.