What sound do an otter make?
Sounds Otters Make
Otter sounds include: A loud "hah!" when startled. Bird-like chirping and humming to signal anxiety or call to another otter. Hissing and growling noises to indicate when an otter feels threatened.
Happy Sounds
River otters play with each other and often make sounds when doing so. They may chirp, purr, squeal or make gurgling sounds when they're having a good time.
With a non-stop babble of hums, grunts and shrill squeals as they argue over fish and defend their territories, the Amazon's giant otters are one of nature's noisiest animals.
Giant river otters (Pteronura brasiliensis) are also known as river wolves. Like wolves, they live in large, complex social groups. And like wolves, they sometimes mark their territories and communicate by howling.
Otters have an acute sense of smell, hearing and eyesight. Its eyes are placed at the top of the head, so it can remain alert whilst the rest of the body is underwater. They communicate via whistles, twittering noises and spitting sounds, which can be heard at night when it is quiet and still.
Vocalizations. All otters produce sounds and communicate vocally. Giant otters are the most vocal of all otters, vocalizing frequently and with great volume. Researchers have distinguished nine different vocals, including screams that indicate excitement, and coos associated with interaction.
Otters communicate with chirping, squealing, snorting, blowing, whistling, and screaming noises. Otters make noise when stressed, threatened, agitated, or playing. Otters also communicate with smell and body language.
Otters are scared of dogs, especially larger ones, and will view them as predators.
Neotropical river otters make six sounds, characterized as chirp, squeak, chuckle, hah, growl, and scream, which are used in different social interactions.
Otters communicate by chirping, squealing, snorting, blowing, whistling, and screaming. Otters make noise when stressed, threatened, agitated, or playing. Otters also communicate with smell and body language. There is a more detailed description of North American River Otter vocalizations below.
Why do otters touch noses?
They use touch to establish social bonds and to scent mark. Otters often rub their faces together and touch noses. The sea otter may even touch noses with other animals like seals and sea lions!
Researchers observed and recorded captive neotropical river otters in Brazil and published the first formal description of their vocal repertoire. Neotropical river otters make six sounds, characterized as chirp, squeak, chuckle, hah, growl, and scream, which are used in different social interactions.

River otters communicate with whistles, yelps, growls, and screams, as well as touch and body posture. They also scent mark using scent glands near the base of their tails that produce a strong, musky odor.
Otter pelts feel smooth and soft to us, but if you look at otter hair with a microscope you can see that it's covered in tiny, geometric barbs. The barbs help the hair mat together so tightly that the fur near the otter's body is almost completely dry. And keeping the animals dry is key to keeping them warm.
River otters' diets consist largely of crayfishes, crabs, and other aquatic invertebrates; fishes; and frogs. Despite concern that otters compete with game fishers, the fishes that otters consume are mainly non-game species. Otters may also occasionally prey on birds, rabbits, and rodents.