Loic Poidevin / Grizzly bear (Ursus arctos horribilis) cubs with salmon, Katmai National Park, Alaska, August. Small reproduction only.

Anup Shah / Western chimpanzee (Pan troglodytes verus) infant male 'Flanle' aged 3 years aggressive towards alpha male 'Foaf' aged 30 years because he is interested in his mother 'Fanle' aged 13 years, Bossou F...

Martin Dohrn / Male lion (Panthera leo) feeding on wildebeest carcass, lioness observing. Masai Mara, Kenya. Photographed at night using Thermal Camera technology without artificial lighting.

Jabruson Motion / Eastern mountain gorilla (Gorilla beringei beringei) juvenile swinging on a overhanging vine. Another juvenile steals the vine and then an adult comes over to intervene, stopping a forthcoming fight....

Tui De Roy / Wolf giant tortoise (Chelonoidis becki) two males fight briefly over mating rights. Wolf Volcano, Isabela Island, Galapagos