German Shepherd Mix? Almost definitely. Chow mix? Who knows. Distinctive as heck though!
(Had a good-sized post I was planning on for today, but business-lunch took more time than I expected, so you get a short one. Soon though.)
Edit: Steph over at ‘Musings of a Biologist and Dog Lover‘ has done a detailed breakdown of what she believes the genotype and breed mix of the ‘chow mix’ are, here. Check it out, it’s well worth a read. Dog genetics is a fascinating subject to me… I mean, really, how do you start with a wolf on one side and end up with a West Highland white terrier and a Bernese mountain dog on the other, just by twiddling a few genes?