Oscar Dewhurst / Mute swan (Cygnus olor), two cygnets sheltering under parent's wing. Richmond Park, London, England, UK. April.

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) mother nursing calf, Newfoundland, Canada

Suzi Eszterhas / Leopard (Panthera pardus) six-week-old cub nursing, Jao Reserve, Botswana

Suzi Eszterhas / Leopard (Panthera pardus) mother grooming five-week-old cub, Jao Reserve, Botswana

Marie Read / Common loons (Gavia immer), two adults and chick swimming on a misty lake in early morning, Michigan, USA. June.

Marie Read / American oystercatcher (Haematopus palliatus) adult feeding chick, Long Island, New York, USA. June.

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

Chien Lee / Pygmy Anteater (Cyclopes didactylus) mother and young, Esmeraldas, Ecuador

Chien Lee / Spike-browed Frog (Sphenophryne cornuta) father transporting froglets, Digul River, West Papua, Indonesia

Chien Lee / Spike-browed Frog (Sphenophryne cornuta) father transporting froglets, Digul River, West Papua, Indonesia

Alfred Trunk/ BIA / Common Merganser (Mergus merganser) mother carrying chick, Upper Austria, Austria