Each year, many dogs are found dead locked in a car after suffocating for long minutes in the furnace. Suffice to say that a simple ajar window does not change much. In addition, dogs (and cats) have a slower body temperature regulation mechanism than humans: they only sweat pads and snouts. With the right information and by being attentive, however, it is easy to avoid many dramas, whether you have an animal or not. Read our advice carefully.