A police dog

It's a hot and new topic that a-three-year 
miniature dachshund( miniature sausage dog) got a license of the first  police dog of miniature dachshund.
It's well known such Shepard or  Labrador 
retriever as big dogs work as police dogs to help investigation.
But this time small dogs are also well supportive in the narrow and small area after the disasters.
I know that kinds of dogs must be clever and faithful to the any orders.
They like to work with people and enjoy helping people.
I wonder if my dog Marrie could be a police dog if she were younger and got a good training. 
It's true that getting to be police dogs are rare. 

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