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Arca

Indri

Indri indri

Conservation status IUCN: Critically endangered· CR
Indri (Indri indri)
Photograph from Wikimedia Commons · Wikipedia article (it)

Where the name comes from

The most famous misunderstanding in zoology. In the 18th century the French naturalist Pierre Sonnerat was travelling the forests of Madagascar with a local guide who at one point pointed at the trees exclaiming indry!, that is “there he is!” or “look!” in Malagasy. Sonnerat wrote the word down as the animal’s name, and ever since this species has carried as its name, repeated twice, a pointing finger. The real name, in Malagasy, is babakoto.

Facts

Group
Mammals · Mammalia
Order
Primates
Habitat
Montane rainforest of the eastern belt
Range
Eastern Madagascar, in an increasingly fragmented area
Size
64–72 cm long, 6–9.5 kg
Diet
Herbivore — young leaves, flowers, fruit
Lifespan
About 20 years

Characteristics

  • 01

    It is the largest living lemur and practically the only one without a tail.

  • 02

    It moves only by vertical leaps between trunks, and never willingly comes to the ground.

  • 03

    It has never bred reliably in captivity: it exists only where its forest exists.

What sets it apart

It sings in chorus, and in 2021 it was found to sing in time. Analysing twelve years of recordings, researchers found precise rhythmic ratios of 1:1 and 1:2 in the intervals between notes — the same proportions on which human music is built. Before that, no mammal other than us had shown categorical rhythm. The duets between male and female carry two kilometres, and families answer one another from valley to valley: a forest tuning itself.

Next species

Thomson's gazelle

Eudorcas thomsonii