05/04/2026
Before you fall in love with that dog from a rescue group, make sure they have a negative heartworm test. There are wonderful rescue groups that take in and adopt out dogs from all over the country (and some from out of the country), and heartworm is much more prevalent in the South. Heartworm is very expensive to treat, and requires keeping the dog calm for the months that they are being treated.
This serves as a great reminder to make sure your dog is getting a monthly preventative for heartworm. There are some great options - discuss them with your veterinarian to make sure you are using the one recommended for your dog. Some take care of fleas and ticks and other parasites, as well as heartworm.
The recently released 2026 Heartworm Incidence Map shows that canine heartworm incidence has expanded to areas that are cooler, drier and far from the warmer, humid Gulf Coast and Southeast. The American Heartworm Society estimates that at least 1.1 million dogs in the U.S. are positive for heartwor...