If you see a pet in a vehicle, van, or pick-up, even if the windows are open, call Law Enforcement immediately.   This is serious and seconds matter. Dogs left in the bed of a pick up truck should be reported immediately to Law Enforcement.    Likewise, if you see a dog tied out or in a kennel that is exposed to the heat, call Law Enforcement. Dog houses alone are like ovens and would not provide a pet with adequate shade. Even concrete kennel floors get extremely hot.  
 
346.57 DOGS AND CATS IN MOTOR VEHICLES.  (in part)
    Subdivision 1. Unattended dogs or cats. A person may not leave a dog or a cat unattended in a standing or parked motor vehicle in a manner that endangers the dog's or cat's health or safety.
    Subd. 2. Removal of dogs or cats. A peace officer, a humane agent, a dog warden, or a volunteer or professional member of a fire or rescue department of a political subdivision may use reasonable force to enter a motor vehicle and remove a dog or cat which has been left in the vehicle in violation of subdivision 1.
    Subd. 3. Petty misdemeanor. A person who violates subdivision 1 is subject to a fine

 
343.29 EXPOSURE OF ANIMALS; DUTY OF OFFICERS.  (in part)
    Subdivision 1. Delivery to shelter. Any peace officer, animal control officer, or agent of the federation or county or district societies for the prevention of cruelty, may remove, shelter, and care for any animal which is not properly sheltered from cold, hot, or inclement weather or any animal not properly fed and watered, or provided with suitable food and drink in circumstances that threaten the life of the animal.

So, pet owners, please don't get yourself all worked up about this. Don't ignore the heat alert.  Leave your pets home. Make sure they have shade if they are outside and of course clean water available at all times. Put ice cubes in the water bowl which will keep water cold longer. Keep feces and urine cleaned up as this attracts flies and gnats. If you take your pet with you during this extreme heat and a concerned citizen reports your pet left alone in a vehicle,  don’t be surprised if your pet is gone when you get back.    

A little common sense goes a long way.