Britain's biggest grocer has rolled out a new initiative in all its stores as the weather heats up.
Tesco has introduced patrols in its car parks to ensure no canines are left inside motors.
The supermarket has teamed up with the RSPCA for the new summertime roll out.
It confirmed the news this weekend, Birmingham Live reports.
Tesco staff have been trained on what to look out for.
Tesco confirmed: "We're working with the RSPCA & all of our colleagues in store have received training to ensure animal welfare is protected. Our colleagues regularly patrol our car parks & are given guidance on what to do if they spot a dog unattended in a car."
The confirmation comes as the UK heatwave is set to spark skyrocketing temperatures.
But with the hot weather comes a big risk for pet dogs.
Emergency animal care provider Vets Now also warned rising temperatures could increase the risk of heat stroke in dogs.
The vet service sees a spike in callouts as the weather warms up and has warned that temperatures above 20C put dogs at risk, and that survival rates for dogs with heat stroke is just 50%.
Dave Leicester, head of telehealth at Vets Now, said: "All dogs can overheat if left without water or in hot conditions for too long. So on hotter summer days it's best to walk your dog in the morning or evening when it's cooler."
