Is it safe walking an expensive dog?

I walk my dog around the neighborhood, however I'm concerned because it's an expensive dog and he might get stolen.
Update: First Anonymous: Nothing to do with race whatsoever.

I swear some of these answers are out of this world!
Update 2: It's not just walking around my neighborhood but also anywhere else I bring my dog with me. It could be the park, store, while I'm running errands, etc.
Update 3: Thanks to the recent responder. Dogs and pets are considered property under the eyes of the law and property are worth something so they can get stolen.
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