Heartworm can be fatal but is fully preventable. All dogs, even those with no symptoms, should have a yearly test for heartworms by a vet. If the test is negative the vet will prescribe medication for heartworm prevention. See your vet immediately if you suspect your dog may have Parvo. Treatment is necessary to prevent dehydration, to control vomiting and diarrhea, and to prevent secondary bacterial infections.
Parvo is highly contagious among dogs but is also preventable.
A vaccine is available and you should ensure that your dog is protected. DOGS AND CATS Internal Parasites Watch for diarrhea or constipation, a huge appetite in very thin pets, pot belly with a thin body in young animals, and a dull coat and listlessness in both young and adult animals. If you notice the above symptoms take a small stool sample to the vet for analysis. As worms can often be detected only by microscopic study of a stool sample, this ailment should not be self diagnosed. If left untreated worms can lead to severe malnutrition and lowered resistance to infection.