Causes of dogs panting:

1. Dogs panting heavily due to fright or strenuous exercise, and will recover on their own after a while.

2. Disease factors. Some common respiratory diseases in dogs can cause dogs to pant.

3. Allergy. Dogs are stimulated by allergens. After allergies occur, in addition to skin itching or other skin problems, there is a high possibility of respiratory abnormalities.

4. In hot weather, dogs are prone to panting while sleeping.

5. Poisoning. When dogs eat some toxic and harmful substances, dogs will also have some adverse reactions, including panting.