A set of animals includes a dog, a cat, a rabbit, and a parrot. The dog is a mammal, the cat is a mammal, the rabbit is a mammal, and the parrot is a bird. Which of the following is the odd one out?
In a race, five participants (P, Q, R, S, T) finished in different positions. P did not finish first or last. Q finished before R but after S. T finished last. Who finished first?