As a reptile owner, you know that it is in the nature of your animal to prefer live food. After all, snakes, iguanas, etc. naturally need fresh meat in large quantities. But buying live feed mice on a regular basis can become quite expensive in the long run. An excellent alternative to live food is frozen mice, rats and fish, because frozen food is much cheaper and, like live food animals, still completely preserved. It is important for the reptile to perceive its prey as such.