I have 2 chihuahuas, both rescues. The first was my boy Diablo, who was originally named Bailey. Nice name for a female, non-chihuahua, but not for him! He easily made the change to Diablo, and also comes to the name Boogie (short for a nickname...Boogerbutt
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Second dog was named Peanut at the shelter. Well, again, a fine name, but not for my 6 pound black and white chihuahua. I named her Lupe, and again, it took no time at all for her to come to that name.
Yep, like someone said, new home = new name.