Definition that contains octu
- bat nocturnal mouselike mammal with forelimbs modified to form membranous wings and anatomical adaptations for echolocation by which they navigate
- owl nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes
- cockroach any of numerous chiefly nocturnal insects; some are domestic pests
- moth typically crepuscular or nocturnal insect having a stout body and feathery or hairlike antennae
- roach any of numerous chiefly nocturnal insects; some are domestic pests
- raccoon an omnivorous nocturnal mammal native to North America and Central America
- jackal Old World nocturnal canine mammal closely related to the dog; smaller than a wolf; sometimes hunts in a pack but usually singly or as a member of a pair
- nightingale European songbird noted for its melodious nocturnal song
- hyena doglike nocturnal mammal of Africa and southern Asia that feeds chiefly on carrion
- possum nocturnal arboreal marsupial having a naked prehensile tail found from southern North America to northern South America