The proposed book differs significantly from existing books on this topic in that although it will obviously include discussion of some neat and spectacular aspects of animal warning coloration, mimicry and camouflage, it will go far beyond that as it will deal with all aspects of adaptive resemblance, not just visual ones. It will discuss the various ways that adaptive resemblances have been categorised (the numbers of component species; who benefits, loses or is more or less neutral, etc.), and provide examples of each. It will consider certain types only shown by humans (as far as is known),and sexual mimicries, juvenile mimicries, molecular mimicries (as in parasite-host interactions), sound mimicries (and camouflage), etc.. It will therefore be a comprehensive survey of the ways that the ‘appearance’ of organisms evolve to their benefit.