My word a day today is Achates--   noun: A trusty friend or companion.  Right away thought that would be a great name for a dog.  Then I read further:  After Achates, the faithful companion and friend of Aeneas, in the epic poem Aeneid by the Roman poet Vergil (70-19 BCE). In the story, Achates is called fidus Achates (faithful Achates) and he accompanies Aeneas everywhere in his adventures.   My dog's full name could be Fidus (or Fido) Achates.  (We once had a dog named Madame Florence Foster Jenkins)