If you suspect your pet has heatstroke, you should take the following steps.
Begin by removing your pet from the hot environment immediately.
Apply or spray tepid/cool water to the animal’s fur and skin before you apply a fan to maximise heat loss.
You should then wet down the area around your pet which can help.
Do not use ice or ice-cold water as this can worsen the problem.
Take your pet to your nearest veterinary practice immediately because heatstroke is always an emergency and your pet needs to be checked over by a vet.