Volume up! 🔊 - Giant otter vocalizes! Giant otters are not only the largest otter type in the world, but may also be the most vocal! They can be quite loud animals. This species have been known to produce a range of vocalizations including snorts, barks, screams, growls, hums, coos and whistles. Newborn pups also make squeaking sounds. The various vocalizations communicate different messages such as interests, warnings, possible danger, reassurance and seeking attention. Have a listen to Katuma