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Shishi-odoshi (鹿威し) (literally, "deer-frightening" or "boar-frightening"), in a wide sense, refers to Japanese devices made to frighten away animals that pose a threat to agriculture, including kakashi (scarecrows), naruko (clappers) and sōzu. In a narrower sense, it is synonymous with sōzu.

A sōzu is a type of water fountain used in Japanese gardens. It consists of a segmented tube, usually of bamboo, pivoted to one side of its balance point. At rest, its heavier end is down and resting against a rock. A trickle of water into the upper end of the tube accumulates and eventually moves the tube's centre of gravity past the pivot, causing the tube to rotate and dump out the water. The heavier end then falls back against the rock, making a sharp sound, and the cycle is repeated.^[1]

These fountains were originally intended to startle any herbivores, such as deer or boars, which might be grazing on the plants in the garden, but shishi-odoshi are now a part of the visual and aural design of gardens, and are used primarily for their aesthetic value.^[2]

• 
  Diagram of operation
• 
  General Shishi-odoshi in Japan Gardens, in front of Japanese cuisine restaurant, Chōfu, Tokyo
• 
  Sōzu, a kind of shishi-odoshi, at the Shisen-dō in Kyoto
• 
  Morikami Museum and Japanese Gardens - shishi-odoshi filling up
• 
  Emptying
• Video of a shishi-odoshi in operation, taking one minute to fill
• 
  A modern, stylised shishi-odoshi in Kalemegdan Park, Belgrade

• Monjolo
• Suikinkutsu
• Water scoop (hydropower)
• Tsukubai, a basin often used in conjunction
• Klopotec, another device for repelling animals

Sōzu recording

Sound of a sōzu. Recorded at Shisen-dō, Kyoto, Japan

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• Information, diagram, and audio file