Black lab mix found on Shadydale

A neighbor on Shadydale has found a male, black, lab mix puppy. He's about six months old, very well behaved, friendly and appears to be trained (rides well in car). He isn't wearing a collar and does not have microchip. He does not do well on a leash, which may mean that he's used to a back yard. Please contact Petwatch if you know anything about this puppy.