Yes that is bad. A dog should go to the vet for an yearly check up, have blood work done and fecal done. As far as I know the only way to get heartworm preventative is either form your vet or with a prescription from your vet and that is important too.
__________________  Taylor  My babies Joey, Penny , Ollie & Dixie   Callie Mae, you will forever be in my heart! |