夜や行こう動どう物ぶつ

や

こ

う

ど

う

ぶ

つ

Meanings

1

noun

nocturnal animal

Refers to animals that are active at night. A straightforward compound of 夜行 (nocturnal) and 動物 (animal).

night, evening

行going, journey, carry out

動move, motion, change

物thing, object, matter

夜や行こう性せい
夜行性 is an adjective meaning 'nocturnal' (as in 夜行性の動物), while 夜行動物 is a noun meaning 'nocturnal animal'.

Compound of 夜行 (やこう, 'nocturnal') and 動物 (どうぶつ, 'animal').