The 1-year-old retriever was "extremely dehydrated" and could not stand or hold up his head when officers rescued him in Centreville, Virginia. Since then, he's well on his way to recovery.

WASHINGTON — A young dog that was found barely alive over a month ago is well on his way to a full recovery, and Fairfax County police want to find his former owner.

The 1-year-old black retriever — now known as Max — was found emaciated near 13000 Wakley Court in Centreville, Virginia. Max wasn’t expected to survive: He was “extremely dehydrated” and could not stand or hold up his head. He had no collar or microchip.

Since his rescue, Max has put on weight: He had weighed 23 pounds; he now weighs 45. Max is in medical foster care and not up for adoption, but he’s “happy, playful and friendly,” authorities said.

Fairfax County animal protection police are asking for the public’s help in finding the owner. If you have any information, please contact Officer Enna Lugo at Enna.Lugo@fairfaxcounty.gov or 571-641-7434.

Tips can also be submitted anonymously through Crime Solvers; by calling 1-866-411-TIPS; or by texting “TIP187” plus the message to CRIMES (274637).