Brachyteles hypoxanthus, commonly known as the northern muriqui, is a species of primate found in the Atlantic Forest of Brazil. It is characterized by its long limbs, prehensile tail, and a distinctive coat that ranges from light brown to gray. This species is known for its social behavior, often living in groups that exhibit strong bonds among members. The northern muriqui primarily feeds on leaves, fruits, and flowers, making it an important seed disperser in its ecosystem. Unfortunately, Brachyteles hypoxanthus is classified as critically endangered due to habitat loss and hunting, highlighting the need for conservation efforts to protect this unique primate.