Dogs frequently stick out their tongues back and forth

1. When dogs feel anxious or nervous, they will keep sticking out their tongues. This is a sign of stress.
2. Dogs suffer from epilepsy. Some epileptic seizures manifest themselves as licking the air, which is an abnormal muscle reaction.
3. Dogs will lick the air frequently to relieve pain when they have gastrointestinal pain, such as intestinal obstruction, pancreatitis, esophagitis, etc.
4. Dogs suffer from dental disease. In severe cases, dogs will show symptoms such as loss of appetite, bad breath, licking the air, and licking their noses. Use these actions to relieve pain.
5. Dogs that are bitten by bugs or suffer from skin diseases often lick the air.
6. Dogs suffer from canine cognitive dysfunction, which is equivalent to Alzheimer's disease in humans. Generally, older dogs are more likely to suffer from the disease. This is because they unconsciously and repeatedly stick out their tongues to lick the air.
7. In summer, when it is too hot, dogs stick out their tongues to dissipate heat.