Killer orca whales mimic words 'hello', 'bye' from humans
Scientists have shown that killer orca whales could imitate human speech, in some cases at the first attempt, saying words such as "hello", "one, two" and "bye bye". A 14-year-old female orca trained in France could mimic all noises within 17 trials with "hello" correctly produced over 50% of the time. Dolphins, elephants, and orangutans can also mimic human speech.