Humans have enjoyed having animals as pets for centuries. Ever since wolves got close to humans, and eventually evolved into the dogs that you know today, people have domesticated and loved animals.
Dogs in particular seem to hold an emotional attachment with humans, and there are some heartwarming and heartbreaking stories involving these four-legged friends.
Not so long ago, there was the tear-jerking story of the woman who spent all night in a shelter holding a dying dog so that they had company at the end.
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