Granted, It's *possible* that there could be a *truly* "alien"
  situation here on this planet between two mammals.

  But considering the extreme correspondence between different
  mammals, including humans; the amount of relatable points we
  share FAR out weight the differences.

  Example: dogs and cats.

  They're really almost alike. They also learn to tolerate each
  other. They also have ways of communicating with each other.

  Consider that: *we* can't penetrate the minds of dogs and cats,
  yet, they still communicate.