Yvonne, a cow that has lived in the wild since eluding a trip to the slaughterhouse in May, has foiled all attempts to capture her. Now officials say that she's not to be disturbed. Josef Enzinger/dapd hide caption

itoggle caption Josef Enzinger/dapd

Susan Edwards, manager of Austin Wildlife Rescue, holds a juvenile raccoon. The raccoon should be twice its size by now. But because of the drought, "the water sources are so poor, the mother's milk" lacked essential nutrients, Edwards said. John Burnett/NPR hide caption

itoggle caption John Burnett/NPR

Midge swarms are seen along Highway 30 in Council Bluffs, Iowa. The recent flooding in the area caused a population boom of the tiny insects. Mike Hollingshead/extremeinstability.com hide caption

itoggle caption Mike Hollingshead/extremeinstability.com

Mary Palmer brings Max in for a checkup at Belle City Veterinary Hospital in Racine, Wis., on Oct. 29, 2008. Max was stolen from his yard in Florida and turned up several months later in Chicago. Scott Anderson/AP hide caption

itoggle caption Scott Anderson/AP

A polar bear researcher was suspended from his government job last month over allegations of federal contract mismanagement. Above, a polar bear on fresh ice in the Hudson Bay in November 2007. Paul J. Richards/AFP/Getty Images hide caption

itoggle caption Paul J. Richards/AFP/Getty Images

A pair of flies mate on a leaf. Male damsel flies use all sorts of tricks to get females to use their sperm — and not the sperm of another male damsel fly — to fertilize their eggs. Alex Wild hide caption

itoggle caption Alex Wild

Only the U.S. and Britain had fully mechanized militaries, historian Tim Francis says. Most other European allies used horses or donkeys to help move supplies. Or, as in the North, reindeer. VikaValter/istockphoto.com hide caption

itoggle caption VikaValter/istockphoto.com

"Bear Woman" Lynne Gravier turned her ranch home into something of a luxury resort for more than a dozen bears, like this young California black bear, seen here in a tree in Los Angeles last year. Mike Meadows/AP hide caption

itoggle caption Mike Meadows/AP

A wildlife biologist was flying over the Arctic on a routine whale survey when his team spotted dead polar bears in the water. The researcher's report on the observations raised public alarm about the threat of climate change, he's now under an official investigation. Above, a polar bear walks on the frozen tundra on the edge of Hudson Bay on Nov. 14, 2007. Paul J. Richards/AFP/Getty Images hide caption

itoggle caption Paul J. Richards/AFP/Getty Images

A wild horse roams on the beach without regard to campers at Assateague Island National Seashore, Maryland. Kristen Wyatt/AP hide caption

itoggle caption Kristen Wyatt/AP

In San Francisco, gulls sit atop the large baseball glove behind the bleachers in left-center field during a game between the San Diego Padres and the San Francisco Giants. The gulls are known for arriving right at the end of games to pick up food scraps. Thearon W. Henderson/Getty Images hide caption

itoggle caption Thearon W. Henderson/Getty Images

The move by Micronesian islands to create a shark sanctuary two-thirds the size of the U.S. is the latest in a series of shark preservation areas aimed at reviving declining populations. Above, a group of hammerhead sharks swim in the Pacific Ocean off the coast of Malpelo in this undated photo. Yves Lefebre/AP hide caption

itoggle caption Yves Lefebre/AP