[HPforGrownups] Re: Why is everyone surprised at Harry's Patronus?

[Fred Uloth]

No: HPFGUIDX 77509

At 11:46 PM 8/14/2003 +0000, Pruneau wrote:
>But he chose the Patronus, so I assume that very few people  (only
>Lupin, Hermione, and maybe Snape, Ron and Sirius) knew it was a
>stag. So IMHO, the Quidditch Patronus was just a (large) silvery
>wisp of vapour.

Actually, at the end of PoA Dumbledore remarks on noting the curious form 
of Harry's patronus at the match after he learns of James's Animagus form. 
So by that point in time Harry's Patronus was a stag and had a form...else 
DD could not have noted it and seen the connection between the patronus and 
James.