Anyone who’s ever had a cat in the same house as a Christmas tree knows how irresistible the seasonal foliage can be to a feline. Plants are already exciting enough to kitties without all the blinking lights, flashing ornaments, and twinkly tinsel. One of my treasured childhood Christmas memories is of my Dad’s cat, Dizzy, curled up underneath a huge, sparkling tree in the living room as we serenaded her with “O Christmas Cat” (an original carol to the tune of “O Christmas Tree”).....