Heartworm Info
Heartworm FAQ
What is Heartworm Disease? ▼
What does Heartworm Positive mean to a dog in a shelter? ▼
What is the treatment for Heartworm Disease? ▼
What is the prognosis for a Heartworm Positive dog? ▼
What are the activity restrictions for a Heartworm positive dog? ▼
Heartworm Testimonials
McDermott adopted in 2025 by Zoe A
On January 10, Finn (formerly McDermott) arrived from Alabama through Rocky Mountain Lab Rescue as my foster… and by day 3, it was obvious he was already home.
Finn arrived heartworm positive and started treatment right away. For the next few months, life looked a little different—30 days of medication, injections, short leash walks, puzzle games, “find it,” frozen treats, learning new tricks, and even watching a couple Colorado snow storms roll in together. Somewhere in those quiet days at home, Finn wasn’t just recovering—he was thriving.
So many amazing people made his second chance possible—from his rescue team in Alabama to Rocky Mountain Lab Rescue, who guided us every step of the way and generously covered his treatment.
On May 12, we got the news we had been hoping for. Finn’s first post-treatment microfilaria test came back NEGATIVE! He’s officially cleared to slowly start exercising again, and we can’t wait to hit the trails.
If you’ve ever hesitated to foster or adopt a heartworm-positive dog, I understand. I did too. But Finn showed me that treatment can be manageable… and dogs like him are absolutely worth it. He is the sweetest boy from Alabama!

