"A scorching hot car is no place to leave a dog, and it’s heartbreaking to hear any news of a neglected pet found heat-stressed or dead after suffering through such unbearable temperatures. The problem has prompted Toronto advertising firm Rethink to release a high-tech, heat-sensing dog collar that can automatically send SMS alerts to the dog owner’s smartphone when the collar detects that the temperature is getting too hot. With help from the Toronto Humane Society, the collar was developed to feature a built-in SIM card, a thermistor, some LEDs and a coded chip. It’s been named the “Dog Caller,” and it operates just like a cellphone without a keypad. The collar’s tipping point is 26-degree Celsius, and an SMS warning is sent when that temperature has been reached."