I'm an au pair for an 18 month old boy and he absolutely LOVES this book! He requests me to read it numerous times a day, several times in a row. This has been going on for over two months now, so I would recommend this book for any toddler who is already showing an interest in books. I still haven't gotten tired of reading it, and it's fun to come up with new ways of reading it to him; the story is fun in itself -- for both him and I. He loves the long "teller, weller, beller, geller, etc. in the cellar" which I speed read through and he always laughs at. And then, with "the yottle in the bottle whom I do not wish to keep," he always shakes his head right along with me. Another plus is that I have memorized the book by now, and if he begins to get fussy (e.g. when getting his diaper changed, or on the way home after a tiring excursion) I can recite it to him and it usually improves his mood quite a bit! I would highly recommend this book to any parent or caregiver. Out of the three Dr. Seuss boardbooks we have so far (the others being Mr. Brown Can Moo and The ABC Book), this is by far my favorite, and his too.