Just doing my normal searching and came across this one. I realize Cookie is chipped so they should've scanned this little guy, but if nothing else he needs to be rescued from Miami-Dade Animal Services...the picture is terrible but he looks about the right size and he's neutered. Here's his picture and links to both pages he's on in case one link doesn't work:
PetHarbor.com: Animal Shelter adopt a pet; dogs, cats, puppies, kittens! Humane Society, SPCA. Lost & Found. Adopt a Yorkshire Terrier Yorkie: LIL LOU: Petfinder