Tom Gilks / Economic migrant from rural areas working on construction site, Nairobi, Kenya, November 2013.

Jabruson Motion / Conservation worker darting a female Sumatran orangutan (Pongo abelii) in a tree with anaesthetic, part of a relocation programme, Sei Serdang, Prima, Batang Serangan, Langkat, North Sumatra, Indonesi...

Jabruson Motion / Conservation workers preparing a pump action dart gun to anaesthatize a Sumatran orangutan (Pongo abelii), part of a relocation programme, Sei Serdang, Prima, Batang Serangan, Langkat, North Sumatra,...

Staffan Widstrand / Wild Wonders of China / Lisu man holding arrow in mouth during traditional crossbow competition, Tongbiguan Nature Reserve, Dehong Prefecture, Yunnan province, China, May 2017.

Paul D Stewart / Historical illustration of extinct Puri tribe from North Coast of South America. Mother and child, and man in hammock, with poison dart frog held over fire to collect its toxin, used for poison darts...

Lisa Hoffner / Tranquilizer dart in African elephant (Loxodonta africana) bull 'Frank' Samburu National Reserve, Kenya. Taken with cooperation of Kenya Wildlife Service and Save the Elephants

Pete Oxford / Huaorani Indian making Curare tipped darts. Curare is one of the most toxic poisons known to man and is made from a liana. The poison is boiled on the fire. The dart tips are dipped into the poison wh...

Pete Oxford / Huaorani Indian making Curare tipped darts. Curare is one of the most toxic poisons known to man and is made from a liana. The poison is boiled on the fire. The dart tips are dipped into the poison wh...

JEFF FOOTT / Indian / Asian rhinoceros (Rhinoceros unicornis) darted for sedation prior to translocation to Royal Bardia NP, Chitwan NP, Nepal, 2003

JEFF FOOTT / Indian / Asian rhinoceros (Rhinoceros unicornis) before collapsing, darted for sedation prior to translocation to Royal Bardia NP, Chitwan NP, Nepal, 2003

Mark Moffett / Embera Choco Indian making a blowgun for hunting with poisoned darts, Colombia

Mark Moffett / Embera Choco Indian making a blowgun for hunting with poisoned darts, Colombia

Mark Moffett / Embera Choco Indians capture highly toxic Golder Poison Frog (Phyllobates terribilis) with which to poison darts for hunting, Colombia