Electronic road signs in Wales will display a messages to owners which highlights the fatal consequences of leaving dogs in vehicles during warmer weather.
The Welsh Government’s cabinet secretary for economy and transport Ken Skates has "wholeheartedly" supported the new road-side message which will be displayed in spells of hot weather.
The variable message signs will display the warning: "ceir poeth yn llad cwn - dogs die in hot cars."
Mr Skates, who is also the AM for Clwyd South, said in his letter: "We wholeheartedly support the message being conveyed. Roadside message signs are normally used strictly for journey type campaigns and those directly related to drivers during their current journey; for example the ’don’t drink and drive’ campaign.
"However in this instance, owing to the severity of the issue, we will look to accommodate on variable message signs when they are not being used for operation reasons."
The RSPCA, who have worked with the Welsh Government to implement the new signs, revealed that 29% of dog owners still think it is safe to leave a dog in a car on a warm day.
While the new signs have been announced in the lead-up to winter, the animal charity has been working on the campaign for a "number of years".
A spokesman from the RSPCA, who said the charity is delighted with the Welsh Government’s support, said: "We have been calling for this for a number of years, and the Welsh Government’s correspondence from August confirms this will happen in future spells of warmer weather.
"The weather this year highlights the importance of this and the impact this is likely to have in the future in spreading this important message."
Every year the RSPCA and police are overwhelmed with calls about dogs left along in hot vehicles.
A member of RSPCA staff spent just over 26 minutes in a stationary car in June, which can be seen in the video below, and the temperature of the car shot from 23.3°C to more than 57°C - this can cause heatstroke, organ failure, and various other complications in dogs which can lead to death.
The charity urges member of the public to call the police on 999 if they see a dog in distress in a hot car as being locked in a vehicle can be fatal for dogs, even in the shade and with the windows cracked open.