There are many stories of brave people, but here are 50 heroic animals in human history. You'll meet Cher Ami, a homing pigeon who flew for the U.S. Army in World War I, and Sgt. Stubby, a dog who served in 17 battles on the Western Front. Here too are chimpanzee David Greybeard, studied by Jane Goodall, and Alex, a parrot who not only repeated but understood hundreds of words. These heartwarming, surprising true tales for readers 9 to 13 are presented with photos and vibrant illustrations.