could this puppy be part jack russell?

maybe part jack russell?

I recently rescued an abandoned mixed breed puppy, and no one can seem to tell me what she might be. Not that it matters, but I was thinking it might help me guess how big she will be. She weighs 5 lbs now, the vet says she is 8-9 weeks old at this time. I am uploading a picture so you can take a better guess. I've been told by some breeders the puppy is part chow, some she is part golden retriever, some she is part jack russell, some the is part weenie dog and the list goes on.....Thanks for your help!