noun
large animal; giant beast
Refers to any very large animal, often with a sense of awe or in fantasy contexts. Can be used for real megafauna or fictional monsters.
その森には巨獣が住んでいるという伝説がある。
There is a legend that a giant beast lives in that forest.
博物館で巨獣の骨格標本を見た。
I saw a skeletal specimen of a large animal at the museum.