Re: My 7-month old frequently scratches at table tops, etc.
I believe the scratch at things because they like the sound. My son does it constantly and I let him, because secretly I am hoping he wears down his nails and I don't have to file them! Haha I have mentioned this to friends, and they all say their babies do it as well. As for the kicking, I believe that is totally normal as well.. As you said, exercising their legs and seeing what they can do. As for the left more than the right, I don't think you need to worry. We all have our preferences, don't we? Haha