I bought this for my son when he was about 9mos because it was the only toy he reached for on the shelf - and it was off. At first, he just liked pressing animal buttons because they lit up when he did, not paying too much attention to the other features. Now, at 20mos, he still chooses it from his toy box (or wherever he leaves it) and will turn it on himself (the off switch is great) and will press the yellow "note" button to hear the different songs. He flips the pages and will even press the right animal for the page. I love the fact that nearly a year later, he still plays with it. So the good things: colorful pictures, cute music, off switch and self-off, toddler-friendly (and all that implies; i.e. throwing, drooling, chewing, stepping on, constant button pressing, etc.), and the batteries last a good while. The not-so-good stuff: sort of heavy for infants, and the songs get annoying if played over and over for days on end (but at least the 'note' button has a nice variety). Yeah, just those two - it's really a great toy for kids. I will also add that I have the older version of this toy, with slightly different colors than this one, but the music is the same. This is one "on a whim" toy that I do not regret buying. And you know how kids always 'play with the box' and not the toy, this is not the case with this one... even a year later!