How do young and old social animals view each other? Are aged animals perceived by others as weaker? Or wiser? What is the relationship between age and power among social animals? Taking a cue from Frans de Waal's seminal work examining the lives of chimpanzees, Anne Innis Dagg in this pioneering study probes the lives of older mammals and birds. Synthesizing the available scientific research and anecdotal evidence, she explores how aging...