ZECKE: Zecke, a pensive-looking monk saki (Pithecia monachus), was adopted in 2002 by Gudrun Sperrer, owner of the Pilpintuwasi Butterfly Farm and Amazon Animal Orphanage in Iquitos. Monk sakis, found in Brazil, Colombia, Ecuador and Peru, are diurnal tree dwellers. Monogamous pairs breed for life and live in nuclear families; however, at night, several families may sleep in the same tree. © Carrie Vonderhaar, Ocean Futures Society/KQED