Guy Edwardes / 2020VISION / Cowslip flowers (Primula veris), Catcott SWT reserve, Somerset Levels, England, UK, April. Photographer quote: 'Finding a perfect group of cowslips takes time, as does washing all your clothes when yo...

Eric Baccega / Veterinarian administratiing a sedative injection to a female Orangutan (Pongo pygmaeus) for a check with an MRI scanner, Zooparc Beauval, France, October 2017.

Juergen Freund / People preparing Kava, a sedative drink, during the annual soli, Mali Island in Ligau Levu Village, Mali Island, Macuata Province, Fiji, South Pacific. August 2013

Nick Upton / Veterinarian Dewi Jones injects a young male Pygmy goat (Capra aegagrus hircus) held by a veterinary nurse with sedative in an operating theatre before castrating it, Wiltshire, UK, September 2014. Mo...

Simon Colmer / Trunk of the Neem tree (Azadirachta indica) member of the mahogany family, Meliaceae. Used in India for medicinal purposes: anti-fungal, anti-bacterial, ant-viral, contraceptive, sedative

Jaymi Heimbuch / Coyote (Canis latrans) biologist, Marcus Mueller, sedating coyote during collaring in nature preserve near University of Wisconsin-Madison, Madison, Wisconsin

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) veterinarian, John Ochsenreiter, holding anesthesia dart used during collaring process, Pikertyk, Tien Shan Mountains, eastern Kyrgyzstan

Nigel Cattlin / Sap / latex exuding from cuts in the seedpod of an Opium poppy (Papaver somniferum) an annual garden ornamental and a source of opiate narcotics