OK, I admit it. In a lot of ways this is a really lazy post. 'C is for...' could have got my brain whirring on compositions playing on any word beginning with C such as, er, composition.
However, whilst working in my office the other day I turned from my computer (see, another possibility) to see Winnie, for that is her name, settling down for a power nap in my armchair. And thus I reverted to kindergarten and learning to spell - 'C is for cat'.