[aigel]

You dropped the ball on your part of the work. You stopped training a 1 year old dog for 6 months!? What did you do with the dog for 6 months? Keep it in the back yard? Maybe it is time to return the dog to the shelter but reconsider getting a new one. You may not have time to properly socialize and train a puppy right now.

Dogs need a lot of work when they are pups. Daily obedience training is one thing but the most important thing is proper socialization. You and your family take the dog literally everywhere it is legal - daily: Playgrounds where kids are petting it, family BBQs, kids birthdays, stores, dog parks etc. If you do this, it is very unlikely you get a dog that fears strangers and turns into a fear biter. It is work - people will be annoyed and you will get annoyed by everyone commenting on the cute puppy. But this is where the dog learns that people are fun and positive.

I hope you can turn this around. Unfortunately the dog now is already fearful and you can not socialize it any more as openly as you could have 15 months ago ...

Good Luck,

George