"Deer are a direct reference to the Buddha's first teaching in the Deer Park, Sarnath, also called Dharmachakra Parivartan. The suggestion is that so wondrous was the Buddha's appearance and peaceful his presence that even the animals came to listen. In the Tibetan tradition, a monastery which holds the Kangyur and Tengyur collections of texts would have this symbol of deer on both sides of the Dharma-wheel on the roof"