Hihin is the standard Japanese onomatopoeia for a horse whinny, written in hiragana as ひひーん in manga, anime subtitles and sound effect libraries. Recordings labelled this way circulate on Japanese soundboards and are reused internationally by editors who need a clean, longer neigh without background noise. Because the spelling mirrors the rising cry itself, creators searching in Japanese or romaji both find the same clip. It remains popular for reaction edits, farm roleplay and parody scenes where a human character is compared to a horse.