I came home today to find that my cat, Zipper, had passed over the rainbow bridge. She had been diagnosed with a heart murmur at 1 year old, but was asymptomatic. We decided to watch and wait to see how things progressed. Now it's three years later. She was acting abnormal (more reclusive than normal) yesterday evening, and I came home at lunch time today to find her already gone. It happened so fast. I know that there was no cure for her heart disease, and I gave her the best possible life during her short stay here on earth. I will definitely miss her daily head-butts. Rest in peace my kitty.