David Perpinan / Close-up of a carer feeding a Blue fronted amazon (Amazona aestiva), confiscated from illegal wildlife trade, Brazil.

Petra Wegner / British Shorthair Cat, kitten, golden-ticked-tabby, being administered ophthalmic ointment by a woman. Model released

Colin Seddon / Hedgehog, orphaned 8-day-old baby being fed from syringe

Francisco Marquez / Researcher collecting a blood sample from a Greater flamingo (Phoenicopterus ruber) juvenile's leg during the ringing process, Fuente de Piedra lagoon, Malaga, Spain. August.

Marie Read / Backyard setup for photographing Ruby-throated Hummingbirds (Archilocus colubris) in summer, New York, USA. A medical syringe is used to inject a few drops of sugar solution into the flower (set up in...

Suzi Eszterhas / North American beaver (Castor canadensis) orphaned kit feeding from syringe. Lindsay Wildlife Experience, Walnut Creek, Contra Costa County, California, USA. September 2015. Captive.

Jabruson Motion / Close-up of a vet preparing drug for darting a Sumatran orangutan (Pongo abelii), part of a relocation programme, Sei Serdang, Prima, Batang Serangan, Langkat, North Sumatra, Indonesia, 2015.

David Perpinan / Carer feeding Blue fronted amazon (Amazona aestiva) chicks, confiscated from illegal wildlife trade, Brazil.

Suzi Eszterhas / Koala (Phascolarctos cinereus) orphaned joey aged ten months, hand feeding from syringe. Lone Pine Koala Sanctuary, Australia, captive.

Neil Aldridge / Defra Field Workers dispose of a used syringe as part of biosecurity measures after vaccinating a European Badger (Meles meles) during bovine tuberculosis (bTB) vaccination trials on farmland in Glouc...

Suzi Eszterhas / Eastern Fox Squirrel (Sciurus niger) four week old orphaned young drinking milk, WildCare, San Rafael, California

Tom Marshall / Licenced Wildlife Trust vaccinator preparing badger bovine TB vaccine in the field wearing PPE. Cheshire, England, UK, May 2013.