Roland Seitre / Peters's Angola Colobus (Colobus angolensis palliatus) covered in pollen, native to Africa

Enrique Lopez-Tapia / Zanzibar red colobus (Piliocolobus kirkii) in tree, Jozany Forest, Zanzibar, Tanzania. Highly endangered. Did you know? Zanzibar red colobuses are called 'Poison monkeys' by the local people on the is...

Tom Struhsaker / Uganda Red Colobus Monkey (Procolobus rufomitratus tephrosceles) by stripped tree bark she is feeding on. Kanyawara, Kibale National Park, Uganda.

Tom Struhsaker / Uganda Red Colobus Monkey (Procolobus rufomitratus tephrosceles) medium sized juvenile stripping and feeding on bark of bottle brush (Callistemon citrinus). Kanyawara, Kibale National Park, Uganda.

Tom Struhsaker / Udzungwa Red Colobus Monkey (Procolobus gordonorum) adult female among canopy leaves. Udzungwa Mountains National Park headquarters near Mang'ula, Tanzania. Endangered species

Tom Struhsaker / Udzungwa Red Colobus Monkey (Procolobus gordonorum) adult female among canopy leaves. Udzungwa Mountains National Park headquarters near Mang'ula, Tanzania. Endangered species

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) head portrait, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) jumping through the air, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) relaxing on tree branch, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) juvenile, sitting in tree calling, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) mother with offspring, sitting in tree, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) head portrait of infact, sitting with mother, Jozani Chwaka Bay NP, Zanzibar, Tanzania