Shattil & Rozinski / Bullsnake {Pituophis catenifer sayi} ready to strike, Colorado, USA
01130144
Gabriel Rojo / South american terns {Sterna hirundinacea} at nest colony, Valdez peninsula, Argentina
01130143
Gabriel Rojo / South american terns fighting {Sterna hirundinacea} Valdez peninsula, Argentina
01294429
Bence Mate / Dalmatian pelicans (Pelecanus crispus) mobbed by gulls, Danube Delta, Romania
01282278
Bryan and Cherry Alexander / Polar bear (Ursus maritimus) mother protecting her already mauled cub from the large male that attacked it. Cape Churchill, Manitoba, Canada.
01300318
Tim Laman / Two Gentoo penguin chicks (Pygoscelis papua) squabbling, Antarctica, February
01260565
Bernard Castelein / Avocet (Recurvirostra avosetta) birds in territorial dispute, Texel, the Netherlands
01260518
Bernard Castelein / Blackbuck (Antilope cervicapra) two males fighting, Rajasthan, India
01260520
Bernard Castelein / Blackbuck (Antilope cervicapra) two males fighting, Rajasthan, India
01272769
David Tipling / Steller's sea eagle {Haliaeetus pelagicus} and White-tailed sea eagles {Haliaeetus albicilla} squabbling over fish, Akan, Hokkaido, Japan, February
01272827
David Tipling / Southern Giant Petrel {Macronectes giganteus} feeding on seal carcass, South Georgia
01260519
Bernard Castelein / Blackbuck (Antilope cervicapra) two males fighting, Rajasthan, India
