At the moment I am working on a book that will have a LOT of animals featured. Since they all have to be in specific scenes and work interactively at times, everything has to be vectorised. However, I can not create generic silhouettes of creatures, they have to be of specific species, so I have been silhouette-ing! I block out my silhouettes in PS so that I don’t get the overcorrection of lines that Ai sometimes does, and then I convert the PSD file into a layered Ai file, do a simple image trace and expand and voila! I have my species-specific vector silhouette. I will have approx. 40 critters in this format, and then I have the main characters and backgrounds to contend to. Stay tuned!