For thirty minutes (or any prolonged period) on a hot day you should be prosecuted and the dogs shouldn't be returned to your care? Just seen a Daily Mail article regarding this as police have had to smash windows to save two labs who were so hot they had to be hosed down by the RSPCA. Frankly, after 30 minutes, it's lucky they are not dead. I've been seconds away from smashing the window of a van parked near my work with two absolutely boiling GS dogs inside with no windows open, parked in the full sun. The owner came dashing over proclaiming they had only been there for 15 minutes. 15 minutes in a closed car on a summers day! How bloody stupid do you have to be to do this?!