The endangered Hoolock gibbon (Hoolock hoolock) population in Bangladesh fell by more than 50% from 1986-2006, as their forest habitat was felled.
Photograph: Dr Axel Gebauer/NPL/WWF
In Ghana’s Mole national park, the African lion (Panthera leo) population has declined by over 90% over 40 years.
Photograph: Anup Shah/WWF-CanonEight populations of snake – including meadow viper, asp viper and western whipsnake – across the UK, France and Italy have declined by over 50% from 1990-2009.
Photograph: Bruno D'Amicis /NPL/WWFThe short-beaked common dolphin (Delphinus delphis). Between 1996 and 2007 numbers declined in the Ionian sea from 150 to 15 individuals.
Photograph: Chris & Monique Fallows /NPL/WWFA rain frog in Costa Rica. In Puerto Rico, between 1989 and 2001, three species of rain or robber frogs are thought to have gone extinct.
Photograph: Ryan M. Bolton/Alamy
Widespread declines have been found in the European eel (Anguilla anguilla) and the species is now critically endangered.
Photograph: Erling Svensen/WWF-CanonForest elephants (Loxodonta africana cyclotis) now have just 6% of their historic range, with 60% population decline from 2002-11.
Photograph: Carlos Drews/WWF-Canon
Farmland birds in the UK, such as grey partridge (Perdix perdix), have declined by 50% between 1970 and 2012, mainly due to changes to intensification of farming.
Photograph: David Tipling/NPL/WWFThe leatherback turtle (Dermochelys coriacea) has declined by 95% between 1989 and 2002 in Las Baulas national park in Costa Rica.
Photograph: Juergen Freund/WWF-Canon