Whereas some philatelists collect stamps by country, some prefer to arrange their collections by theme, and a popular one is Cats on stamps! There are many new issues every year and I am not tempted to continue my late mum's collection although it's nice to look at them once in a while.
However, I have made a few stamp collages on a Cat theme .. see the Cats page of my website.
This one hasn't yet made it to the website ..
My black and white cat, Emerald, has taken the theme to a whole new level ..