I'm guessing you're in northern FL maybe? Several years ago I almost killed a former room mates boxer by taking him for a run around the neighborhood during the summer like an idiot. A block from the house he collapsed on the ground and wouldn't get up, scared the shit outta me. Had to carry his ass the rest of the way home till he cooled down. South FL summers are no joke, I'll never make that mistake again lol. A yellow lab would be in agony down here with all that fur, would have to keep him inside with AC all day and that's no way for a lab to live IMO. My lab enjoyed the western NY winters and running around my parents huge yard too much for me to drag him down here. I'd just feel to guilty to own a dog down here personally. Gonna have to wait till I retire back up to NY.