Intresting question. As a human being I would rather be fluent in all languanges because it's a way to communicate with stranger people and at the same time discover local cultures and and visit the world. If I was born as an animal I would be able to communicate with animals because I think they are more emphatize then people. In conclusion it depends from me if I was born as a human or an animal, so in this case I would rather be fluent in all languages expecially in English.