Pettigrew in Hagrid's hut - an answer

[scoutmom21113]

No: HPFGUIDX 113411

Susana da Cunha wrote:
Ok. Someone is bound to have come out with this, but I was annoyed 
at the posts suggesting the Marauders Map didn't show inside of 
Hagrid's hut and only then it stroke me.

>From PoA chap. 17, Lupin says:

""The point is, even if you're wearing an Invisibility Cloak, you 
still show up on the Marauder's Map. I watched you cross the grounds 
and enter Hagrid's hut. Twenty minutes later, you left Hagrid, and 
set off back to the castle. But you were now accompanied by someone 
else.""

My point is, either way, as soon as Ron/Harry/Hermione arrived at 
Hagrid's, Lupin would have seen the Harry/Hermione in the forest, 
deleted the map, tossed it in his pocket and run to Dumbledore's 
office.

Bookworm:
A very good explanation of how Lupin might have seen the trio coming 
and going.  But it doesn't answer your original question of why 
Pettigrew didn't show up on the map.  If the occupants of
Hagrid's hut were visible on the Map, then Pettigrew's name
would have been right there when Lupin first saw them enter.  

Pettigrew had been missing for several days, and as a Marauder he 
would have know that the inside Hagrid's hut was a safe place to 
hide.  When they created the Map, it would be unlikely of the 
Marauder's to include a place where few students were likely to
go.

Ravenclaw Bookworm