John Chan / California least tern chick (Sternula antillarum browni) falling over as it runs towards its parent returning to nest site, Huntington Beach, California, USA, June.
01617403
Andy Rouse / African Lion (Panthera leo) cubs age 2 months playing, Masai Mara, Kenya
01619829
Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chick aged 1-3 weeks on adult's feet, portrait. Atka Bay, Antarctica. August.
01619536
Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chicks aged 20-24 weeks stretching wings, in moult whilst parents fish at sea. Atka Bay, Antarctica. January.
01619231
Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chick aged six to eight weeks sheltering on parent's feet, portrait. Atka Bay, Antarctica. September.
01619202
Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chick aged six to eight weeks stretching whilst on brooding parent's feet. Adult looking down at chick. Atka Bay, Antarctica. September.
01619199
Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two chicks aged six to eight weeks brooding on parents' feet. Atka Bay, Antarctica. September.
01619196
Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two chicks aged six to eight weeks brooding on parents' feet, one vocalising. Atka Bay, Antarctica. September.
01619175
Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two chicks aged six to eight weeks huddling together. Atka Bay, Antarctica. September.
01618001
Nick Upton / Two Red fox (Vulpes vulpes) cubs playing near the entrance to their den at dusk, Somerset, England, UK, May.
01607505
Danny Green / Sea otter (Enhydra lutris) resting on sea ice, Alaska, USA, June
01607503
Danny Green / Sea otter (Enhydra lutris) resting amongst sea ice, Alaska, USA, June
