Karine Aigner / Cuban Parakeet (Psittacara euops) preening each other, Cuba. Endemic.

Karine Aigner / Cuban parakeet (Psittacara euops) preening, Bermejas, Cuba. Endemic.

Alex Hyde / King penguins (Aptenodytes patagonicus). Grytviken, South Georgia. November.

Nick Upton / Ivy bee (Colletes hederae) mating ball, showing a mass of males clustered around a female recently emerged from her burrow, Wiltshire, England, UK, September.

Pedro Narra / Red fox (Vulpes vulpes) vixen grooming cub, Sado Estuary, Portugal. May

Donald M. Jones / White-tailed Deer (Odocoileus virginianus) mother cleaning fawn, Montana

Donald M. Jones / White-tailed Deer (Odocoileus virginianus) doe cleaning newborn fawn, Montana

Ann & Steve Toon / Impala (Aepyceros melampus) allo-grooming, iMfolozi game reserve, KwaZulu-Natal, South Africa, August

Philippe Clement / Pair of Roe deer (Capreolus capreolus) resting and grazing in forest in summer, France, September.

Philippe Clement / Northern gannets (Morus bassanus) preening, sitting on nests made with plastic, Hermaness NNR, Unst, Shetland Islands, Scotland, UK, May.

Dave Bevan / Harvest mouse (Micromys minutus) grooming, sitting on a wheat seedhead, UK, July. Captive.

Cyril Ruoso / Minden / Long-tailed Macaque (Macaca fascicularis) pair grooming, Khao Sam Roi Yot National Park, Thailand