well, I would do what muddypaws said.. just a big trim in the back legs, chest & tummy if there's a lot there. just around the thick hairs. that's what I do to my retreiver... and since I don't want my crayola to be bald...what helps us ALOT is ice cubes!! you should try and if samantha loves them as much as my crayola does, you wouldn't believe the result after a few of ice cubes being chewed/swallowed! (you could feel crayola's chest cold inside! nope..not kidding) that's the most thing would cool him down completely.

have a happy cool birthday, samantha