1. Take It Easy
Exercising in hot weather is one of the main causes of heatstroke in dogs. If your dog begins panting on a hot day, let him rest in the shade.
2. Give Him a Drink
Your dog should always have plenty of water. Do not give your panting dog ice water; this could cool him too quickly. Cold water from the tap is good enough.
3. Go For a Swim
A nice dip in a pond, stream or pool could be just the thing to cool your dog off and ease his heavy panting.
Know the Danger Signs
If your dog succumbs to heatstroke on a hot day, excessive panting won't be the only symptom. Other symptoms of heatstroke in dogs include drooling, fever, warm, dry skin, and rapid heartbeat. Diarrhea, vomiting, and weakness could occur.
If your dog displays these symptoms, cool him down immediately by submerging him in cool, but not cold, water.
Putting your wet dog in front of the air conditioner can help further cool his body. When your dog has cooled down and revived, offer him water.