My last girl, Ziva, had heart failure. It was so hard to stop throwing the frisbee to her. Her favorite thing to do was chase and return that thing! Before we could see a cardiologist we had her at the vet. Sitting on the floor with her she just fell asleep. Very peaceful. I hope Frosty responds to the meds and lives a long time. CHF for doggies is so unfair 😞