There is no such thing as a *true* black Maltese.  Originally, Maltese came in different colors, but white is the only color now.  The dog must be mixed with something else.  Check the AKC standard.

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: All I have ever been told is that there is only ALL WHITE MALTESE. Well I just got one and was looking in a book on Maltese and there was a BLACK MALTESE in it, but I can't find anything on them. I was wondering if anyone can give me some tips on places to look.