Juergen Freund / Spectral Tarsier (Tarsius tarsier) in strangler fig tree, Tangkoko National Park, North Sulawesi, Indonesia

Juergen Freund / Spectral Tarsier (Tarsius tarsier) in strangler fig tree, Tangkoko National Park, North Sulawesi, Indonesia

Barrie Britton / Spectral tarsier eating lizard {Tarsius tarsier / spectrum} captive, Indonesia

Constantinos Petrinos / Two Spectral tarsiers {Tarsius tarsier / spectrum / fuscus} looking down from tree, North Sulawesi, Indonesia, Vulnerable species

Juergen Freund / Spectral tarsier {Tarsius tarsier / spectrum} smallest primate, South America

Juergen Freund / Spectral tarsier {Tarsius tarsier / spectrum / fuscus} Sulawesi, Indonesia world's smallest primate endemic

Constantinos Petrinos / Spectral tarsier {Tarsius tarsier / spectrum / fuscus} looking down from tree, North Sulawesi, Indonesia, Vulnerable species

Solvin Zankl / Spectral tarsier {Tarsius tarsier / spectrum / fuscus} Sulawesi, Indonesia

Solvin Zankl / Spectral tarsier portrait {Tarsius tarsier / spectrum / fuscus} Sulawesi, Indonesia

Solvin Zankl / Spectral tarsier {Tarsius tarsier / spectrum / fuscus} Sulawesi, Indonesia

Solvin Zankl / Spectral tarsier {Tarsius tarsier / spectrum / fuscus} Sulawesi, Indonesia

JIM CLARE / Spectral tarsiers (Tarsius tarsier / spectrum / fuscus) Tangkoko NP, Sulawesi, Indonesia