Quote Originally Posted by Karen
I would take him to a different vet, ask around and see if someone has a reccomendation for good diagnostician in your area.
I agree, I would find a new vet that can give you new antibiotics and tell you better information.

Here's a site I found on foxtails, maybe it'll help:
http://www.csupomona.edu/~jcclark/dogs/foxtails.html

Please keep us posted and let us know how your doggie is doing!