Can you identify this dog?

Here are some pictures of the Terv that was found at the Ocala, FL Publix a few months ago.
The lady said the dog was under weight and looked like he was out on the streets for quite some time. The lady took him in and took him right to the Vet. She made him healthy and had him neutered.
The Vet thinks he is around 7 to 8 years old and the lady called him Maveric. He has a great tempermant (a little scared right now in a new place), but is not a fear biter. The lady said he had great manners and some training so someone took care with this dog before he was abandoned or got loose. She just could not keep him any longer because her other rescue dominate male wanted to fight with the Terv. Other wise he gets along with dogs, farm animals and people very well. I don't know about kids..
He was very well taken care of from his foster home with this lady and is neutered, HW neg. up to date on shots and ready to go. He is a very well bred dog but I checked for tattoos and microchips but can not find anything.
Masveric is currently being housed through the generosity of Von Cristel Kennels.
Location: Brooksville, FL
Contact: Dianne at vcristel@atlantic.net