It's snowing!<P> That means there are<P> snow spies in the neighborhood,<P> Christmas cookies in the oven,<P> and hours of fun ahead<P> for a boy and his dog. <P> So get ready to enjoy<P> winter with <P> easy-to-read favorites<P> Henry and Mudge<P> as they share<P> the warmth and excitement of<P> the merriest of days,<P> the sparkle days.