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					Originally Posted by katy-yorkie  Thanks for the prayers and well wishes.  It has been hot and humid here.  I took Maggie to the park very early as I didn't think the heat and humidity would be a factor that early.  The vet thinks the heavy breathing and panting is due to her vomiting.  I don't know if I agree with that.  Today she didn't vomit until after she had almost collapsed. On Tuesday she vomited before the heavy breathing but it was much earlier in the day. She does the same thing in cooler weather, only it's not as bad. No matter what the weather is, she heads for the tile or laminate floors and lays down, always breathing heavily and panting. But nothing like the past couple of days.  She has slept all day, going out to potty one time.  If she doesn't improve drastically, I will be taking her to a cardiologist. | 
 
  Good.  Get her checked by the best & don't assume because one vet couldn't find something, then nothing is wrong.  You know your own dog.  They have ways of letting us know when things aren't right & our persistence is often the only way of getting some kind of help to them.  It could be just the heat but I would be like you & have to know it is not something else that she needs some type of treatment for.  It could be she's got an iffy GI situation as her vid sure reminded me of Tibbe & how he stood, head out & down - but he didn't pant like that.  He gets very hot outside from playing, endless running & doesn't act like that video shows.  Last summer we had weeks of triple digit temperature & all his outings were hot, hotter & hottest with lots of humidity on some days so we know heat well.   
Let us know when you know.  Until then, Maggie girl is in my prayers.