Marauder's Map: Selective Against Marauders?

[pandrea100]

No: HPFGUIDX 103888

> Alina wrote:
> As for Pettigrew, well, Harry 
> didn't use the map all that often and when he did, he wasn't 
looking at the 
> areas where Ron happened to be nor the Gryffindor tower where 
Pettigrew 
> probably stayed most of the time. I think we can probably count on 
one hand the amount of times Harry used the map, it's not that 
improbable that he didn't see Pettigrew on it

Do we know that the Map can see through an animagi disguise?  I have 
always thought that in rat form, Peter showed up on the map AS 
Wormtail, therefore neither Harry nor the twins ever noticed anything 
funny.  The time that Lupin noticed "Peter" on the Map, he had for 
some reason - perhaps to get away from Crookshanks - had to 
temporarily transform back into human form, just for a minute - 
unluckily for him, the very minute Lupin happened to be looking at 
the Map.  I'm not sure if this theory really holds, though, is there 
anything to contradict it?

Pandrea