This came through Facebook and I am reposting it. To me it looks like a young Bavarian Mountain Bloodhound. The message next to the picture says:
Sweet Mona's time is up tomorrow!! Help! We had someone interested but we haven't heard back from them so we are so worried about this sweet girl. She's young, well mannered, gets along w all dogs, very gentle. She's available and urgent at Jones County Animal Control in Gray, Ga. 478-986-1427 - 395 Eatonton Highway. M-F 9-1; sat 9-12. Serious inquiries can email us at firstname.lastname@example.org. We can arrange transport anywhere.
UPDATE: It looks like Mona's owners found her :-)