Bridging, also known as a marker, is one of the most important tools we have in the toolbox of teaching animal behaviors. It is one of the most important and one of the most misused, if used at all. A bridge is a sound or signal that tells the animal that a particular behavior is what is earning it the reinforcer. Some people use a clicker, a whistle, a hand signal, the word ‘Good’, and more. The bridge is one of the most important forms of communication we have with the animal. If you are not getting the behavior you are wanting, this is an area you may want to give serious consideration.