QUICK FACTS
Title: Aye-aye (Daubentonia madagascariensis)
The place it lives: Madagascar
What it eats: Seeds, nuts, fruits, nectar, plant matter, fungi, insect larvae and honey
Native to Madagascar, this lemur appears like a wierd mixture of a number of animals. It has the spherical eyes of an owl, the ears of a bat, rodent-like enamel that by no means cease rising and a wiry, bushy tail longer than its physique.
Aye-ayes are the world’s largest nocturnal lemur, weighing round 4 kilos (1.8 kilograms) and reaching as much as 24 inches (60 centimeters) lengthy from nostril to tail tip. Younger aye-ayes have a silver entrance with a stripe down their backs, however as they become adults, their thick fur turns a yellow-brown with white ideas. Throughout the day, they sleep in spherical nests crafted from leaves and branches, whereas at evening they roam the treetops in quest of meals.
Aye-ayes have extra-long, bony center fingers. Because the animals transfer alongside tree branches at evening, they faucet the wooden quickly with their lengthy fingers, listening for delicate modifications within the echoes that sign the presence of hole chambers the place wood-boring insect larvae disguise. As soon as a grub is situated, the aye-aye gnaws a small gap into the bark utilizing its enamel, then inserts its skinny finger to fish the meal out. These lengthy center fingers have ball-and-socket joints, giving the lemurs a variety of movement to higher attain their prey.
Nevertheless, biologists additionally discovered that the lemurs use these elongated fingers for an additional activity: nose-picking. In a 2022 paper printed within the Journal of Zoology, researchers described how aye-ayes attain by their noses to the again of the throat, then lick off the gathered mucus. The group famous that the lemurs could also be interested in the “texture, crunchiness and saltiness” of the mucus — which can additionally stop micro organism from sticking to their enamel.
Like rodents, aye-ayes have repeatedly rising incisors. Their higher and decrease entrance enamel by no means cease rising, however they’re worn down by the wooden, bark and nuts that they gnaw by.
In Malagasy folklore, aye-ayes are thought-about omens of loss of life, and a few consider that if an aye-aye factors its finger at you, it is a loss of life sentence, in keeping with the Pure Historical past Museum in London. Due to these superstitions, aye-ayes are generally killed on sight, contributing to their declining inhabitants. As soon as listed as extinct, they had been rediscovered within the wild within the Nineteen Fifties, however they’re nonetheless endangered.
To defend themselves towards predators, aye-ayes rely totally on stealth and camouflage. Their darkish fur helps them mix into the nighttime shadows of the rainforest. Their massive, delicate ears allow them to detect the slightest rustle of leaves — an important potential for avoiding predators like fossas (Cryptoprocta ferox), carnivorous mammals endemic to Madagascar.
When threatened, aye-ayes might freeze in place, counting on stillness and silence to keep away from detection. They’re additionally very agile and are in a position to leap and climb quickly by dense forest canopies to flee hazard.
