I have a soft spot for cryptozoology, so this was a shoe-in for me.
According to the opening editor's note (and the internet, which I consulted to confirm), this is based on a book which came out in the early 20th century, written by William Cox, a man with the same name as my maternal great grandfather. Each chapter discusses a different cryptozoological creature, and I'm very uncertain as to whether they're purely from Cox's imagination, or derived from actual fable. Either way, I've never heard of any of them before.
The narrative voice is particularly notable - stylized, caricatured, and pretty silly, if you pay attention. There's a bias against Frenchmen (which, I understand from other reviews, screens more offensive racism in the source-text).
The graphic design is pretty gorgeous. Each page is a little foggy, smudged, dirty-looking. Some of the text is warped and stylized. And, although the cover is a little busy for my taste, the inside is pretty darn beautiful. Oh yeah, and things GLOW IN THE DARK!!!
I definitely had a moment one night when I looked over at my bedside table, bc this cover was creepily glowing at me.
Anyway, I liked it. So did the kids. :)