More: Don't tell the rest of my pack, but Jaz has my heart. She was born with subaortic stenosis, but with excellent care from some wonderful canine heart specialists, daily meds, and lots of love and fresh air she has defied all the odds and shows no symptoms. We hike every day...sun, rain or...snow! Four miles is the norm, and then she's ready to play some frisbee! Jaz is beautiful, inside and out.