An RSPCA staff member locked himself in the car on a warm day to demonstrate just how bad conditions can get for animals left locked in cars. The employee, Chris O'Brien of RSPCA Cymru recorded himself sitting in his car for 25 minutes outside his Cardiff office to test the conditions that dogs locked in cars would face.
With a digital thermometer and stopwatch in hand, Chris recorded footage at regular intervals highlighting the changes to the conditions within the car and his own body after being stuck for so long. Leaving a dog in a locked car can be fatal - here's what you can do if you see one.
The footage began with the car measuring in at 23.3C, however, this quickly began climbing. Within five minutes, the temperature had already risen to 35.1C. An amber weather alert has already been issued for parts of Wales and England next week as temperatures are expected to reach 34C in some areas.