My 16 month old boy is constantly panting, he seems to all intents and purposes in fine health, I did mention this to the vet some while ago but she dismissed it and said the weather had been particularly warm. Now obviously I know they pant when they get hot, but he seems to pant ALL the time, I have an 8 year old and she hardly ever pants, except after exercise or when the weather is hot. The younger one even seems to find the house too warm and chooses to stay outside most of the time. He has boundless energy so it doesnt seem to bother him much. However he sleeps in the kitchen which has a cold floor and even first thing in the morning when I go into him he is panting...is this normal??