The correct answer to this question is a pig. This question would be found on a test for an early learner, such as kindergarten or an elementary school student. It can help a student identify animals by their sound. Oinks isn't the only sound that pigs make.
They can also bark, squeal, and grunt. In total, they can make over 20 distinct sounds. All of these noises are a source of pigs communication. The main reason pigs oink is when they are hungry. The oink to alert their owner that it is time for them to be fed. They also oink when they hear familiar sounds.
