People think the dog is the most useful animal in the w(). Some people keep a dog to h() them

People think the dog is the most useful animal in the w(). Some people keep a dog to h() them
in the fight against other animals.Some people keep a dog t() frighten thieves.Others use a dog to drive sleep and protect chickens.
But m() people look upon a dog as their friend,just like a member of the f() .
the
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