Some symptoms to look for to see if your pup has heartworm include vomiting, diarrhea, unable to gain weight, lack of energy for play and exercise, and/or poor hair coat quality. Some ways to help prevent parasites is to avoid areas that are contaminated and to keep the backyard clean of feces.
If your puppy has any of these symptoms, be sure to take your little mutt to your trusted vet as soon as possible. Even if your pup does not have these signs, it's still wise to schedule a doctor's appointment for a check up. It doesn't hurt either to have your vet give your new pup some medicine for heartworm to flush the parasites out of their tiny bodies.
Keep your mutts happy, healthy, and hearty!