You know it's hot when...

...two cats and a dog all do their dead-horse impressions within feet of each other in what they've decided is the coolest room in the house.

...your black lab is too tired to get up and ask for a bite of your hot dog. 

...your cat decides that the granite countertop is a good place to lounge. 

...you work in the dark because you don't want your 100 watt light bulb heating up the room.