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  I have one of each. I think after thinking about it I am going to get my chipped dog tattoed as well. I like that it is visible, I like that even if it is altered the dog is still tatooed and that raises suspicion immediatly.  And I am also concerned about the availability of the scanners in some areas. I have not done any research on the pain factor but I will.
 Mignon was tattooed as a tiny baby, she wasn't put under for the procedure.
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