The strip is entirely self-contained. Anyone can read and enjoy it without knowing anything else about comics.
Ah, but if you did...
Then you might find that crown and ermine robe looking very familiar. And you would be right.
Little King, a classic comic strip character drawn by Otto Soglow between 1931 and 1975.
And there's another subtle link. The Little King was mostly a pantomime strip. The lead character never talked. Although the characters in Mutts often have something to say, for this panel, Mooch is silent.
Wholesome, indeed. And fun.