It can live in exceptionally large groups of over 150 individuals, and like other capuchin species, exhibits a complex and high level of sociality.

[2] In 1774 Johann Christian Daniel von Schreber posited Simia flavia as an independent species, but it had long lacked any specimen.

[5] However, de Oliveira and his collaborators pointed out the existence of the previous studies, that is, those of Marcgrave and Schreber, as well as the inadequacy of Mendes Pontes and Maldta's designation of the type specimen, and therefore considered C. queirozi to be a junior synonym.

[7][8] The body hair of the blond capuchin is almost uniformly golden-yellow with the notable exception of a whitish cap on the front half of the head.

[4][5] It was rediscovered in two Atlantic Forest fragments in Paraíba, the Camaratuba Experimental Station and the Engenho Gargaú Private Natural Heritage Reserve.

[10] The blond capuchin is also known to inhabit the Caatinga biome in the state of Rio Grande do Norte located in northeastern Brazil.

Locals of the area claim the blond capuchins frequently raid the nearby maize fields, indicating that they may have been forced to move to and adapt to the Caatinga biome due to human activity.

[13][18][19] It is an omnivore and feeds on a wide variety of food types including fruits and other vegetable parts, small vertebrates, arthropods, and sugarcane.

Here, individuals were observed applying the secretions to each other's hard-to-reach areas, suggesting the sociality of this behaviour may provide further health and efficacy benefits.

Deforestation caused by agriculture and human encroachment has led to reduced population sizes and has forced groups to move from their typically inhabited areas.

[24] Loss of habitat has also caused blond capuchins to live in small forest fragments where they are at higher risk of infectious diseases.

[26] Blond capuchins have been kept as pets at least as far back as the colonial era, appearing in a 16th century fresco commissioned by Pope Leo X.