Lip licking can be a sign of appeasement or submission. Dogs may lick their lips when they are feeling nervous, anxious, or afraid.
Lip licking can also be a sign of concentration. Dogs may lick their lips when they are trying to focus on something, such as a new toy or a command.
If your dog has just eaten or drank something, they may lick their lips to get rid of the lingering taste.
In some cases, lip licking can be a sign of a medical condition, such as nausea or anxiety.
Dogs may also lick their lips to cool down if they are overheating.
Finally, it is important to remember that lip licking is a normal behavior for dogs. Some dogs simply lick their lips more than others.
If your dog is licking their lips excessively, it may be a sign of a problem.