Why does my dog keep licking his lips and opening his mouth?

As well as for many other reasons, dogs can lick their lips due to physical conditions. These include: nausea, mouth or dental problems, Gastroesophageal reflux, intestinal obstruction, pancreatitis or sudden changes to their diet

What does it mean when a dog keeps licking its lips and swallowing?

If your dog is licking and swallowing, she is most likely nauseous. The feeling of nausea makes her drool, and she may lick her lips and swallow to get rid of excessive saliva. She may also eat grass, which is a natural way for dogs to make themselves vomit.

Why does my dog keep acting like he’s yawning?

Dogs yawn when they are tired or bored, they also yawn when stressed. A stressful yawn is more prolonged and intense than a sleepy yawn. Dogs may also drool and lick excessively when nervous. Changes in eyes and ears.