[Dangeranger]

This sort of writing is a wonderful departure from the traditional and is underrepresented in programming books. There are a few other examples that I know of which could be considered similar, but don't focus as heavily on the illustrative approach show here. Some works for comparison would be; Land of Lisp, Realm of Racket, Clojure for the Brave and True, Learn you a Haskell for Great Good!, Learn you some Erlang for Great Good!, and Why's (Poignant) Guide to Ruby. There may be more I am not aware of. On the topic of cats programming there is also JavaScript for Cats, which is great too.

[boomskats]

JavaScript for Cats taught me more about JS than any other book or course combined. I don't know how it compares to the other examples you mention, but there's something about the informal style that just works for me and my attention span.

[richajak]

During the day, my cat will sit behind me while I am coding in Javascript. We practise mentoring system. He can focus in it, not disturbed by the cooked chicken. I think both of us may have ADD/ADHD.

:-)

[rzzzt]

"Chunky Bacon!"

I loved the characters, sidebars and various stories; I don't remember too much of the Ruby content, however.