Caught the Thumbsucker!

We went for a walk which he was not happy about. And as I'm crossing the street I look down and catch him in the act. I know he sucks his thumb but I have never really "caught" him. I can hear him do it at night time and when I go to check it's just his WHOLE HAND he is sucking on. But today I got him red handed the little sneak! I don't want this habit to start but what can I do when it's at night time.





What a cutie! I love him so much.