I adopted part lab when she was about 4 yrs. It was quite evident she had training and knew quite a few commands. My problem to this day (4 yrs later) is if another dog approaches her while we are walking she allows them to sniff but then attacks them. If on the other hand I know the owner and we introduce our dogs by going for a walk together she is fine. Any suggestions as to what to do when another dog approaches her?
First of all I would keep her on a tight leash and I would muzzle her around other dogs, initially, until you get the chance to socialize her more. I would also seek the help of a professisonal trainer or animal behavior specialist. vetcare