FIGS. 9A-C then illustrate aspects of a computer model that can be used as part of a system for generating and displaying animations in accordance with some embodiments. Computer animation model 900 of FIG. 9A uses a skin 902 of a penguin that is configured to be animated using a pseudorandom computer animation model as described herein. FIG. 9B illustrates an internal structure 910 of the computer animation model 900, with bones 940-952. FIG. 9C illustrates an overlay 911 of structure 910 within skin 902 to illustrate how computer animation model 900 can generate a complex pseudo random animation in accordance with embodiments described herein.