Indri Brevicaudatus is a type of lemur found in Madagascar. It is known for its unique appearance and vocalizations that resemble a whale song. Some synonyms for this species include the Short-tailed Indri, the Lowland Indri, or the Woolly Indri due to its dense fur. These primates are known for their arboreal habits, mostly travelling and living in trees, and herbivorous diet. They are critically endangered due to habitat loss and hunting, which has resulted in a decline of populations over the last few decades. Conserving this species is crucial as it is an important part of Madagascar's rich biodiversity and helps to maintain the balance of their ecosystems.