Mimicry is an art wherein a person imitates the voice of another. This talent is not restricted to just humans. There are birds that can mimic our voices and even learn an entire language! Parrots are commonly known to imitate sounds.
Just as we use words and sentences to talk to one another, giant river otters too have a vocabulary of their own. Scientists have found that their vocabulary consists of 22 sounds or words' to talk to one another.