Text: The things to listen and look out for could be any one, or perhaps several, of the the alarm bark of the deer, a noisy screech from the monkeys, and the most telling sign of all vultures waiting for the tiger to abandon the leftovers of what he caught for lunch.
Entailment: There is more than one signal to look for to know about a tiger's hunting success.
Contradiction: Tigers primarily hunt for vultures.