We don't have pets, but ever since my first baby, we have put 18 little gold-colored bells on the lowest branches of our tree. That way, when we'd hear the "tinkle-tinkle-tinkle" of the bells, we could holler, "are you touching the tree???" That same daughter uses them now, too, with 2 cats, 2 dogs and 2 rambunctious little boys in the house!