Chris, actually 25 and humid is fine, for me anyways. I like warm weather, but when it's 34 and humid, ecccch. I agree, 40c and dry is probably a lot more bearable than that. Frankly, I'd love to be there right now!
As for dogs, how about when you take them for a walk on a really cold day and they start hobbling and limping and look up at you mournfully? The salt just eats away at their poor feet!
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You can catch more flies with honey than with vinegar. That's great...if you want to attract vermin.