noun
riding beast (other than a horse); cavalry beast
Manga slang term for a mount or riding animal that is not a horse, often used in fantasy or military contexts.
ファンタジー漫画では、騎獣としてドラゴンやグリフォンがよく登場する。
In fantasy manga, dragons and griffins often appear as riding beasts.
彼は騎獣にまたがり、戦場へ向かった。
He mounted his cavalry beast and headed to the battlefield.