Link Category Code?

Hi, I am editing my blog so that next to link categories there is a small GIF to aid with navigation. I have managed to do so with ‘Categories’ ‘Archives’ and another small category I wrote manually into the sidebar.php document (where all these three components I could edit freely).

However, In my administration panel I created two more link categories, yet cannot locate them in the sidebar.php code, or any of the theme’s php components in fact. Can anyone tell me of a way to either find these link categories in the coding, or another way to get an image beside them through the admin panel?

Thanks 🙂