Thanks to an ex-zookeeper friend, I learned about this great little video showing clicker training with a dog and then at Franklin Park Zoo. (I saw that griffon vulture! I put her picture in a blog!)
It's also an ad for Karen Pryor's book, but it's really good for a basic understanding of modern animal training and how broad the application is--also how kind and fun it is compared to other methods of getting animals to cooperate. Take a look.