Over the holidays, the cats and dogs got up to mischief. In particular, Ruby, the Springer Spaniel belonging to my good friend and fellow writer Lisa Meltzer Penn, sent a missive to my Tabby, Joshua. I almost didn't let him read it. But then I relented, and of course, he had to respond. TO WHOM IT MAY CONCERN: First of all, what is with this “invitation” thing? Yeah, this dog “Ruby” may have started blogging a while ago but it was my human (I am not going to stoop to calling her my “mother”) who had the idea of an interspecies conversation. But I am big enough to overlook that.