Has anyone else tried anything similar to what BadHabit is adding to her water? I would be interested to hear from members who have tried it. Seems like a simple solution, if it works.
I think it is probably from playing so hard but I would mention to your vet next time. My cat had a heart murmur as a kitten but now has an enlarged heart and is on meds. Heavy panting can be a sign of heart distress. Sounds like your kitten is very active and playful.