this is kind of a silly question, but.... my two week-olds are very friendly- whenever I go in to visit them, they like to hop up onto my hands/arms and hang out with me. however, their little dinosaur nails are starting to get quite sharp, and I get scratched up a bit if one tries to climb up my arm. can I trim their nails a little? will it even help? or should I just stick to longsleeve shirts?