From an advance review copy for which I thank the publisher.
This is definitely a book for curious kids with sharp eyes and lots of patience for detail! There are some ninety pages of line drawings packed with hidden items and the guide to those items is included right there in the drawing so you don't have to leave the page to check. If you have the print book (my review copy was of course electronic!) you can also color in the picture after you've discovered the items.
Some pictures are single page, others are doubles, and each depicts a different scene in the zoo and contains fun facts about the animals. Those are, as usual, mostly mammals, but some of them are not so common - such as capybaras and tapirs. There are some birds, reptiles, fish, and amphibians included.
This will be a fun book for any kid who likes to play detective.