"Clicker training" is the popular term for the training or teaching method based on what we know about how living organisms learn.
First widely used by dolphin trainers who needed a way to teach behavior without using physical force, operant conditioning (the scientific term for clicker training) can be and has been successfully employed with animals of all sizes and species, both domesticated and wild, young and old; all breeds of dogs and puppies, cats, birds, leopards, rats, rabbits, chinchillas, fish, and more.
Clicker trainers who learn the underlying principles have at their disposal a powerful set of tools that enable them to analyze behaviors, modify existing methods for individual animals, and create new methods where none previously existed. This flexibility allows the tools of clicker training to be re-invented in new forms that work in a range of situations, and for an infinite variety of animals.