Do Animagi choose their forms?

[alw at wilsonllp.com]

No: HPFGUIDX 11008

I always got the impression from PoA that the Marauders had *some* 
say as to what kind of animal they changed into.

Ch 18 (Moony, Wormtail, Padfoot, and Prongs)
"Sirius and James transformed into such large animals, they were able 
to keep a werewolf in check."

Now, that line doesn't necessarily say point blank that they *chose* 
to become a big dog and a stag, but I can't imagine that they would 
have taken a chance that they would turn into field mice or a nice 
canary - they wouldn't be able to do much to hold Moony in check as 
those animals.  Granted, they were kids at the time and I'm sure they 
didn't think everything through all the way<G>...

Amy