The mating display of the male Rossu, a creature design I did as part of a constructive animal anatomy and creature design class I took in the spring of '12.
It was a pretty extensive process, including full skeletal and muscle design turnarounds, and even a constructive sculpt of the musculature. Much of the process was documented on my tumblr and can be viewed here! http://cael-illus.tumblr.com/tagged/rossu