Why does my dog need to be tested for heartworm disease prior to putting him on heartworm preventative?
Related Questions
- Does my dog really need to be tested every year for Heartworm disease since he is on year-round preventative medication?
- Why does my dog need to be tested for heartworm disease prior to putting him on heartworm preventative?
- What is Heartworm disease? Why does my pet need to be tested while on a preventative?