Spring is the time of year we test for heartworm disease in your dog. (mcleanvet.com)
If you do not do this it is possible the manufacturer of the products may not cover your pet's treatment should they test positive for heartworm disease in the future. (norwalkanimalhospital.com)
What if you could get treatment for every heartworm positive dog in your shelter? (maddiesinstitute.typepad.com)