My little one (LO) loves the Eric Carle books, farm animals, and animal noises so I figured this would be a slam dunk.
This book has the great Eric Carle book illustrations and the animal sounds are wonderful -- my LO loves them.
However, there are a few downsides that led to my 3-star rating:
1) While nice quality, the pages are thin so I would not really recommend this for a younger child. Not only am I afraid of paper cuts for my LO, I am also afraid that the pages will tear soon given how rough my LO is with books (even during a "chill" story time).
2) I am not usually one to complain about getting too much of something but I feel like the number of buttons might actually be too overwhelming. The buttons (and corresponding animal images) are fairly small to make them all fit so it can be difficult to find and/or press them (especially for my LO). I also find this a bit annoying at times as I will be reading the book and there are so many buttons that, especially in the middle of the book, you may have to stop and search for the correct button which can interrupt the flow of reading. I know this seems really minor but my LO is very active and small interruptions in story time can lose LO's attention.
TLDR: Nice book with great illustrations and engaging sounds, if you can follow the buttons and avoid paper cuts and/or potential page damage.