Fake!Moody's "Long, Low Hiss"

[erisedstraeh2002]

No: HPFGUIDX 42481

We've endlessly discussed the possible meaning of the "gleam of 
something like triumph in Dumbledore's eyes" when Harry tells 
Dumbledore that Voldemort used his blood in Voldemort's re-embodiment 
potion.  However, Fake!Moody also has a reaction to this news.  GoF, 
p. 674 (Scholastic hardcover ed.) "'What did the Dark Lord take from 
you?' said Moody.  'Blood,' said Harry...Moody let out his breath in 
a *long, low hiss.*"  Since we don't know that Moody is really 
polyjuiced Crouch Jr. at this point (on the first reading, that is!), 
we think that Moody is on Harry's side and is reacting appropriately 
to the news that Harry was cut.  But on second and subsequent 
readings (it took me four readings to pick this up - you can call me 
slow, I can take it <grin>), we know that it's really Crouch Jr., 
Voldemort's supporter and Harry's enemy, so does this suggest that 
Fake!Moody also realizes that Voldemort made an error in using 
Harry's blood?  If so, how can it be that Fake!Moody and Dumbledore 
both realize this but it doesn't occur to Voldemort?

Or maybe I'm reading too much into this, and it's just Fake!Moody's 
way of continuing his Moody imitation.  But it's only seconds later 
that Fake!Moody reveals to Harry that he's the Death Eater at 
Hogwarts.

Both Moody's hiss and Dumbledore's gleam come after Harry shows them 
where he has been cut (Dumbledore specifically asks Harry to "stretch 
out his arm" (p. 696).  I wonder if this means the location of the 
cut is significant?

Any thoughts would be most welcome!

Cheers,
Phyllis