The Animagus Transfiguration can be performed wandlessly, since Sirius was able to accomplish it in Azkaban when his own wand was long gone (PA19).

• 阿尼马格斯的变形不需要魔杖，因为小天狼星能够在阿兹卡班，当他自己的魔杖离他很远的时候，完成变形。