Videos that could be used to introduce Rifkin

A dog saving another dog: http://www.youtube.com/watch?v=-HJTG6RRN4E

Christian the Lion: http://www.youtube.com/watch?v=52LhuIhEPUo&feature=related

Koko the Gorilla http://www.youtube.com/watch?v=XqTUG8MPmGg

Relationship between an elephant and a dog: http://www.youtube.com/watch?v=e4OD8dxIry8

Chantek the Orangutan:  http://www.youtube.com/watch?v=a6fNps_RUlQ