With the UK facing its hottest May on record, veterinarians are urging dog owners to learn CPR techniques, known as the 'kiss of life', to potentially save their pets during heatwaves. Heat stroke is a leading cause of cardiac arrest in dogs, with research indicating that one in four dogs suffering from heat-related illnesses do not survive. Dr. Emma Chandley, a veterinary surgeon, emphasizes the importance of acting quickly to maintain air and blood circulation until professional help can be reached. Owners should recognize signs of cardiac arrest, such as unresponsiveness and lack of breathing. CPR for dogs differs from humans; rescue breaths should be given through the nostrils, and chest compressions should be performed at a rate of two per second. The RSPCA warns that while first aid can be lifesaving, it should not replace professional veterinary care. Certain breeds, such as King Charles Cavalier Spaniels and bulldogs, are particularly vulnerable to heat-related complications. As temperatures are expected to remain high, pet first-aid training courses are increasingly popular among owners looking to safeguard their pets.