I'd say a second opinion is needed as well and, at the very least, another fecal sample brought in to test specifically for Giardia.
By any chance, do you give your dog raw hide bones to chew?
ETA: What is the name of the dewormer medication your vet gave you? The most effective one we've used with puppies and dogs is Panacur Suspension as it covers a broad range of intestinal parasites.
"Education is a progressive discovery of our own ignorance." -Will Durant
Last edited by luckypenny; March 15th, 2010 at 06:33 AM.