This is what a woolly mammoth looked like — the 10,000-year-old head was found, preserved in ice in the Siberian tundra near the Russian town of Yakutsk in this photo from 2003.
Gamera, a 12-year-old African spur-thighed tortoise, got a wheel from the local hardware store to replace a burned limb that had to be amputated.
Henry Moore, Jr/Washington State University
Bob Ingersoll (left) spent nine years with Nim, the subject of an experiment to see if apes could communicate with humans using sign language. Ingersoll is now the president of Mindy's Memory Primate Sanctuary.
A sea lion eats a salmon in the Columbia River in Washington in 2008. A bill has recently been introduced in Congress to reauthorize the killing of sea lions that are eating the endangered salmon.