Nocturnal Preyers are animals that hunt and feed at night, such as OWLS. OWLS are a type of nocturnal preyer, with four letters in the word. OWLS are birds of prey, meaning they hunt and feed on other animals. They have excellent vision and hearing, which helps them to locate their prey in the dark. OWLS are also known for their silent flight, which allows them to sneak up on their prey without being detected.