Communication
This species uses vocalizations, scent markings and sign heaps to communicate. It has at least 12 different types of vocalization but scent is the most important sense for communication, especially for marking territorial boundaries. The tails have scent glands which they use to deposit their musky scent on the spraint. The spraint is deposited either in tree trunks or on boulders, trails and pool edges. They also have signed heaps, which are visual indicators of an otter’s presence. A sign heap is a small mound of sand, gravel, grass or mud scraped up by the otter. Besides these methods, they also communicate with chemical and tactile cues, such as social grooming, hormonal changes and posturing.
Read more about this topic: Oriental Small-clawed Otter