What breeds is my mutt?

[jayb]

I just rescued Murphy, a very sweet stray, through a local shelter. I think he's about a year old. I've attached a picture. This seems to be his favorite position so far.

Can anyone help identify what breeds he might be? I know the picture isn't great. You can't see his hind legs and tail. His tail is all white, arches over his back, and has lots of long, feathery, white fur. He also has quite a bit of long white fur on his rear end and hind legs. He looks like he might be part retriever on the backend.

Face, muzzle and ears remind me a bit of a german shepherd.

Thanks

JayB