ESP Ltd prides itself in the quality of its plant and animal models. Skulls of dog, cat, sheep, rabbit and various primates are included. These are of great interest to schools and to the vetinary profession. Dissected fish and rat models are offered with removable organs – again appealing to schools, colleges and universities. A Paramecium and a Hydra Model are more unusual but are of the same high quality as the other ESP Ltd models.