The cat sticking out its tongue a little may be caused by relaxation, heat dissipation, or stomatitis. You need to check whether there are any abnormalities in the cat’s mouth. If the cat has symptoms such as oral redness and swelling, drooling, loss of appetite, etc., you need to Take the cat to the pet hospital for examination. If there is no abnormality, then there is no need to worry. Generally, the cat's tongue will retract if you touch it lightly.