alt Hacker NewsI have found that dogs can communicate their desires without words, by facial expressions and vocalizations, but maybe I'm alone in that, too. (I'm not.)
Group dynamics are the nature of kinship theory, where the overlap of DNA predisposes related animals ("kin") to helping those and opposing others.
[Nominative determinism at work again in the comment section.]
Dogs can talk with words, too, although they need technical help for that. A speech pathologist trained her dog to talk with buttons that play recordings of words:
https://www.hungerforwords.com/