Along with the egg nog, Christmas movies, decorations and other festive delights, this tradition has been around in our home since the adoption of our feline friend Rose.   This year, we were alerted to her presence in the tree not by the usual movement and noise that accompany a cat cimbing through the limbs of an indoor Christmas tree, but rather by our son’s amusement at the spectacle.   Perhaps Liam will think this is the norm.   That in every household, part of the yearly Christmas tradition includes the climbing of the tree by the family pet.   Well, in our home, indeed it does…