A vets practice in Devon is warning pet owners not to leave their animals in cars, after a dog died of "heatstroke" in Newton Abbot on Thursday.
Powderham Vets in the town said the warm weather was a "great risk" for dogs left in cars.
Staff at the practice said the owner of the springer spaniel took his dog to work and regularly checked on the animal which was in his car.
Vet, Tom Hill, said the dog had died before they could save it.
Mr Hill said: "We're particularly worried that people aren't aware of the risk at this time of year.
"As soon as the weather warms up it makes a tremendous difference, the car is like an oven."