This works addresses the problem of how to scale catenary riser model tests, properly considering dynamic similarity. A review on the most important dynamic characteristics and parameters is presented and a relevant group of representative nondimensional numbers is analyzed. Not only FPU induced global dynamics is taken into account as well as VIV and other important phenomena of localized nature, such as those that are typical of the touch-down zone. The general rationale is based on analytical and asymptotic dynamic solutions, previously constructed by means of standard perturbation techniques and asymptotic methods. Such a rationale gave rise to a new concept for small scale riser model design and construction. A riser model made of a silicone tube filled with stainless steel microspheres showed to best fit the intended dynamic similarity, focusing on experiments in two distinct laboratories: a wave ocean basin and a towing tank. A series of experimental tests, specially designed to assess the main dynamic characteristics and structural parameters of the riser model, was carried out. The experimental methodology and a summary of results are shown. Finally, a critical analysis, comparing static and dynamic numerical simulations, both in full and model scales, is also presented.