Oh dear, I just don't believe, IMO, that a lost dog roaming around will be "OK".
Have the vets and humane societies in the area been checked recently? Are there posters up for this dog?
R/W male lost in kingsland Sept 1 - Austin/craigslist
Please advise the owners to place ads in the newspapers and to circulate pictures of their dog. This can really help. Wishing for the best.