He does look like he's part doxie; you could put in a call to a dachshund rescue as well.
http://www.drwp.net/
http://www.drna.org/
http://www.c2cdr.org/
http://www.almosthomerescue.org/
(That last one's worth a click just to see the "Happy Birthday America" doxie. Go on, you know you want to see it...)