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The aye-aye (Daubentonia madagascariensis) is a long-fingered lemur, a strepsirrhine primate native to Madagascar with rodent-like teeth that perpetually grow [3] and a special thin middle finger that they can use to catch grubs and larvae out of tree trunks. It is the world's largest nocturnal primate. [4]
Crepuscular, a classification of animals that are active primarily during twilight, making them similar to nocturnal animals. Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night.
Tarsiers are small animals with enormous eyes; each eyeball is approximately 16 millimetres (0.63 in) in diameter and is as large as, or in some cases larger than, its entire brain. [ 16 ] [ 17 ] The unique cranial anatomy of the tarsier results from the need to balance their large eyes and heavy head so they are able to wait silently for ...
The eyes are large, even larger than those of nightjars. As in many species of nocturnal birds , they reflect the light of flashlights. [ 14 ] Their eyes, which could be conspicuous to potential predators during the day, have unusual slits in the lids , [ 15 ] which allow potoos to sense movement even when their eyes are closed.
The “cryptic” animal emerged from its no longer underwater nest and roamed the shore in search of its prey. Nearby scientists spotted the nocturnal animal — and discovered something new.
Slow lorises are a group of several species of nocturnal strepsirrhine primates that make up the genus Nycticebus.Found in Southeast Asia and nearby areas, they range from Bangladesh and Northeast India in the west to the Sulu Archipelago in the Philippines in the east, and from Yunnan province in China in the north to the island of Java in the south.
Other distinguishing features relate to its skull, which has a broad braincase, a depressed interorbital region, and large molariform teeth. [8] Like other night monkeys, the Panamanian night monkey has large eyes, befitting its nocturnal lifestyle. But unlike many nocturnal animal species, its eyes do not have a tapetum lucidum. Also like ...
Night monkeys have large eyes which improve their vision at night, while their ears are mostly hidden, giving them their name Aotus, meaning "earless". Night monkeys are the only truly nocturnal monkeys with the exception of some cathemeral populations of Azara's night monkey , who have irregular bursts of activity during day and night.