If you haven't read it read it and if you have reread it (is that a word ?) Today was our first day with any Humidity and I have a hard going 3 year old that went down today on a triple with a blind, not a huge setup but enough, pretty scary. Thanks to this site and the above sticky I knew enough to do some of the right things according to my vet. Dog went down at 6:45 walking back to the truck after picking up last bird, I had 2 gallons of cold water that I poured over him and then got him in the truck with the A/C on high by 7:45 his temp was down to 100.4 . Vet figured by getting him into the truck with A/C prevented him from going into "Heat Stroke".....
Only thing I may have done wrong was giving him to much water to drink when he was panting heavly. Dog could possibly bloat.
The biggest point would be know the signs, know when to call it quits. Happy ending but could have been worse.
Just a Reminder