Shika

Kasuga Taisha, founded in 768 CE at the base of Mount Mikasa on the eastern edge of the city of Nara, was built to house four kami of the powerful Fujiwara clan, and its founding legend holds that the first of them, Takemikazuchi, a thunder and sword deity already prominent in the Kojiki's account of the pacification of the earthly land for the heavenly grandchild's descent, traveled from the Kashima shrine in the east riding upon the back of a white deer.

From that founding journey, the deer living in the forested hills around the shrine came to be regarded not as ordinary wildlife but as shinroku, divine messengers embodying a living connection to Takemikazuchi himself, and the entire wooded park surrounding the shrine, Kasugayama, was declared sacred and placed off limits to logging and hunting, preserving what is now one of the very few pieces of old growth forest remaining so close to a major Japanese city. Unlike Kitsune or Tengu, whose supernatural standing rests on shape shifting power or hybrid form, the Kasuga deer are venerated as themselves, ordinary animals rendered sacred entirely by their association with a specific kami and a specific founding legend, a distinct mode of Shinto reverence for the natural world.

The protection extended to Kasuga's deer was, for long stretches of Japanese history, a matter of formal law rather than informal custom alone: during the Edo period the killing of one of the sacred deer was classed as a capital offense, and local accounts describe entire neighborhoods being held collectively responsible if a deer was found dead within their boundary, incentivizing residents to actively guard the animals rather than merely tolerate them. This legal severity has softened considerably in the modern period, and Nara's deer today, protected instead as a National Natural Treasure since 1957, roam freely through the city's parks and streets in a semi wild state, closely habituated to the tourists who feed them specially sold rice crackers, shika senbei, sold by vendors throughout the park; a number of the deer have learned to bow toward visitors before receiving a cracker, a learned behavior widely reported as a charming echo of the animals' sacred status rather than any deliberate religious training.

The shrine's own art and ritual continue to commemorate the deer's founding role, and Kasuga Taisha's medieval illustrated scroll, the Kasuga Gongen Genki, depicts the deer repeatedly as visible signs of the kami's active presence among worshippers, a visual tradition that has helped keep the deer legend central to the shrine's identity for well over a millennium.