He does appear to look like a Small Munsterlander but in looking at his muzzle and head I do have some doubts. You might also try posting this on VersatileDogs.com
Pretty possitive it is an SM. He is a young male that looks like a male. Look at the male on this site, www.huntwithamunster.com, then look back at this young male. I think you will agree he is a munster. But no matter, I believe that he has a family flying in from Oregon to adopt him! Hope it all works out!