The illustrations are quite nice (deceptively simple) and the storyline is pleasantly whimsical and relaxed. A bit unbelievable but that's an integral part of the message so no problem there, and it is a children's book anyways so to be expected.
The only part that really bothered me was that there were several large, lovely illustrations that were spread across two pages, and the book itself doesn't lay flat so you kind of lose the middle parts of those spreads. I think they were playing with mixing smaller illustrations and larger ones to encourage a mix of text & image reflection on the part of the reader, but I wish there was a way to do that without missing out on any of the artwork. Maybe a larger book? I'm nitpicking here, I guess.
Overall, not a knock-your-socks-off kind of book, but very enjoyable as a whole. I don't have any kids to read it to but I imagine young animal-lovers and daydreamers would really like it.