You’re a Animagus in disguise while learning at Hogwarts as a Slytherin.

One night you had to go outside for some fresh air. You were walking the halls of Hogwarts in the dark when you heard footsteps behind you. You quickly transformed into a snake and his in the corner as you saw Draco Malfoy walk around in the hall with his glowing wand in his hand. Suddenly he spotted you

A…Snake?