Thumb sucker

Here's Boone...my little thumb sucker! None of my other kids have sucked their thumb like this. He only sucks his left thumb...it looks like three out of my four kids will be lefties. He can now roll from his back to his belly whenever he wants. The problem is that he hates being on his belly, so he gets himself all frustrated every time he does it. As you can see from his arms and cheeks he's a real chubby baby. He weighs over 15 lbs now and is just rolly-polly cute. I just want to eat him up! LOL!