Do Animagi choose their forms?

[Rusty Deyerle]

No: HPFGUIDX 11135

>Here's an interesting question, though. Is there a difference 
>between  transfiguring a human into an animal and becoming an0 
>animagus? 

I think the difference is that transfiguring is a short term spell 
and wears off.  However once you cast the complex anamagi spell, you 
can shape change at will and for long periods of time (Wormtail is 
Scabbers for years).  It seemed that the anamagi spell becomes an 
integral part of the person.  It is like a permanent enchantment.