“…As a follow-on to that study the first question we addressed was-are the cyclic oscillations unique to baboons? A variety of specimens at the American Museum of Natural History were perused to find examples, facilitated by the recently deceased mammologist Sydney Anderson (Gardner et al, 2020). Another primate with multiple cycles of melanization was noted, the New World titi monkey Callicebus personatus that manifests this phenomenon near the termini of dorsal pelage hairs (AMNH Nos.…”