oh my goshh.. im sorry you are going through this with her! that poor doggy!
im not sure what you should do.. but i am bumping this up, so others can chime in!!! (again, i hope you can help the poor lil thing be returned to it's rightful owners.. cuz like you said im sure they miss him!
) and outside in a crate in the heat!!.. not only do you feel bad for the dog, but he is disrupting your household(of course i dont blame him, he is probably sooo uncomfortable!!
)
maybe put a post on craigslist? (maybe the owners will see it??) i dont know?!
good luck! keep us posted!!