"The Tibetan Book of the Dead" refers to the "Bardo Thodol" which translates to Liberation Through Hearing During the Intermediate State, a funerary text intended to guide one through the experiences that the consciousness has after death, during the interval between death and the next rebirth.
Shabkar Tsodruk Rangdrol (1781-1851), was a great Tibetan Yogi famous for his affection and concern for animals. His attitude was an expression not only of personal sympathy and aesthetic appreciation but was also rooted in his understanding of Buddhist teaching.
Thich Nhat Hanh is a Buddhist monk, teacher, author, poet and peace activist. He joined a Zen monastery at the age of 16 where he studied Buddhism as a novice, and was fully ordained as a monk in 1949. His teachings and practices aim to appeal to people from various religious, spiritual, and political backgrounds, intending to offer mindfulness practices for more Western sensibilities.