Question: What kept the police from going into the sewers to retrieve Oswald?
Question: Why exactly does Penguin die? He just falls into his "moat" and comes out bleeding and dying. He wasn't hurt by the bats too much. He made reference to there being a "toxic" lagoon earlier in the movie, so are we to assume the water is polluted by toxic chemicals? And if so, how can the penguins swim in it without being hurt?
Question: The penguins were left behind when the zoo closed. Who/what kept them alive? Oswald?