Prince Bernhard's titi (Plecturocebus bernhardi) is a species of titi, a type of New World monkey, endemic to Brazil.[1][2] It was formally described in 2002 by Marc van Roosmalen and Russell Mittermeier, and named after Prince Bernard of the Netherlands.[3][4] Locals were shown a photograph of the monkey and asked if they knew of its whereabouts, it was referred to as a "Zog-Zog".[5][6] This titi has dark orange sideburns and chest, a reddish-brown back, and a black tail with a white tip.[7] It is about 94 centimeters (37 in) in length, although 56 centimeters (22 in) is taken up by its tail.[7]