Catboy says

Good Morning!  I have some important information straight from the cat's mouth.  It pertains to those of us sweltering in this hottest of summers, but it may also pertain to others who need it.  The first thing is to get lots of water.  You may not feel like eating, but do it anyway, you need to stay hydrated.  He tells me it is really cool under the bed.  Well...I don't fit.  Alternately, he suggests sitting directly in front of the fan.  He suggests many naps during the day, because he becomes exhausted wearing all that black and white fur.  I think one nap is essential.  Brushing should be a daily activity, because he is shedding so badly, but not in front of the fan unless you want a hair sandwich.  All in all, he suggests you take care of your pets, not leaving them in a car at all.  I am sure we can all benefit from some or all of these suggestions.  Oh, and one more thing.  Feel your pets ears to see if they are not to warm and also their nose to make sure it is wet.  Make a ripple, lots to do!, see what happens.