"Young males play-fight on the Hudson Bay shore in a harmless autumn prelude to spring battles for mates that can end in shattered limbs. Lethargic all summer, males may benefit from such exercise and also learn to assess other bears' strength. When shore ice forms in mid-November, most bears move out to winter on the bay."
(Photograph shot on assignment for, but not published in, "Polar Bears, Stalkers of the High Arctic," January 1998, National Geographic magazine)
Where: Simen Mountains National Park, Ethiopia, Africa
When: 2001
Photographer: Michael Nichols
"A chorus of chiding gelada monkey females makes a lasting impression—at least on [biologist Chadden] Hunter. 'That's three generati##被过滤## of anger aimed at one male,' he says. 'Glad it wasn't me.'"
—From "Kings of the Hill?," November 2002, National Geographic magazine