I'm sooo sorry
I had a dog that would always run away but the good part was we would go after her and she just thought it was sooo fun. I'm glad she never got hurt. I'm sorry but, don't blame it on your friend I'm sure even if she wanted to go look it gets dark fast and it would have been safer for her to stay indoors the parents should have been driving around looking.... I'm really sorry for you all and poor little shaggy not his fault at all...
Sorry