Dogs sticking out their tongues and panting heavily are dissipating heat

Dogs are born without sweat glands and can only dissipate heat through their tongues to lower their body temperature. Generally, dogs will use this method to dissipate heat in particularly hot summers. You can usually give your dog an appropriate amount of ice water, or turn on the air conditioner to lower the room temperature.

The dog keeps sticking out its tongue and panting and is sick

If the dog keeps sticking out its tongue and panting when the temperature is appropriate and the water is sufficient, it may be sick. It could be an oral disease, as the dog will pant and stick out his tongue to relieve the pain. It may also be other diseases. All the owner has to do is take the dog to the hospital for treatment.