One of the greatest things to be invented since the advent of the pen is the highlighter. They are invaluable for studying, editing, and a hundred other things. They can even be fun when you get Animal Double-Tipped Highlighters.
Today is Black Cat Appreciation Day and this sweet kitty is here to celebrate. You will notice from this photo that black cats are not completely black, but also have dark brown fur. That's why my family's black cat was named Mahogany.