Have any of you ever seen your cats – especially kittens – pant if they are healthy? I had cats my whole childhood and my brother and mother have cats and none of us ever have seen a cat pant before. Marbles, who is now seven months old, has been panting sometimes since her spay (and vaccine, incidentally) at the beginning of April. Initially it was just when she was running wild. The first time, I called the vets office and was told don't worry, sometimes they'll do that when they're playing hard. But now we are noticing it more often when playing, and also when she's upstairs in our house where it's much warmer – we've seen her two or three times pant a little while just lying there.this morning I had her chasing a wand for maybe two minutes and she laid down and panted for a minute or so. Everything I read says it's very rare for cats to pant and abnormal. I placed a call this morning to the vet again and I am waiting for a reply. But I'm afraid I'll be brushed off again. She had panleukopenia at 10 weeks old and up till now had been fine since. I am reading conflicting things about whether cardiac disease can be a late effect. I didn't worry much initially because she is a very active kitten – and eating and growing fine – but then, it doesn't make sense why she'd be panting now while playing when she never used to before.