A Dog's Life Paperback – January 1, 2005 by Ann M. Martin 
 
Squirrel is not like most dogs. Born a stray, she must make her own way in the world, facing busy highways, changing seasons, and humans, both gentle and brutal. Her life story, in her own words, is marked by loss, but also by an inspiring instinct to survive. And when it seems she will roam the woods and country roads alone forever, Squirrel makes two friends who, in very different ways define her gate.
 
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