I've been reading the series in the original (?) French; the art is gorgeous, but I've always been a bit let down about the fact that it's standard noir with animal faces. I go into this in tedious detail in a review of the book on a much-neglected bédé site, and I think I talked about it a fair bit in one of the Exploring Bédé podcasts I do with Bryan Deemer on a semi-irregular basis.