Jaymi Heimbuch is a writer and photographer specializing in wildlife conservation, technology, and food. She is the author of "The Ethiopian Wolf: Hope at the Edge of Extinction." Clicker training has ...

In her new book, Reaching the Animal Mind ($25, Scribner), Karen Pryor offers a lively, wide-ranging overview of the use of operant conditioning for training, well, nearly any animal you can think of.

I recently was a witness to a rather heated argument between two dog trainers about the relative effectiveness of "clicker training" compared to "marker training." After much noise and hand waving, it ...