I feel your pain. Marcel had giardia twice at age 4-5 mths. (not from the breeder). How old is Cosmo? Oftentimes, adult dogs who contract giardia have no symptoms at all, or have a brief diarrhea (ie. 1 day) and that's it. So, if he is older and gets infected, he may not get sick at all.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~
°¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |