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Did you know howler monkeys (Alouatta sp.) are the only New World primate in which males and females see color equally well, and probably have color vision as good as ours? - ACG, Costa Rica
Danum Valley, Sabah Borneo
In pursuit of treeshrews in Sabah, Borneo, and yes, those are leech socks
Students tracking habituated tamarin groups in southeastern Peru with field researcher Mrinalini Watsa through Field Projects International/PrimatesPeru. Photo credit: Ishaan Raghunandan
How a capuchin monkey (Cebus capucinus) eating bright red Guattarda macrosperma fruits might look to his red-green colorblind group mate- ACG, Costa Rica