So, it is really curious to know how did Snape escaped from the tower after killing the Carrow siblings.
Apparently, whatever James Potter could do, Severus Snape thought he could do better. It seems likely Snape became an animagus, just like his childhood foe.
There is a less entertaining possibility Snape simply transfigured his arms into wings, but let’s be honest; an animagus would be way cooler.
“He jumped,” said Professor (Minerva) McGonagall... “You means he’s dead?” Harry (Potter) sprinted to the window… “No, he’s not dead,” said McGonagall... “…he seems to have learned a few tricks from his master (Lord Voldemort).” …Harry saw… …a huge, batlike shape flying through the darkness… Harry Potter and the Deathly Hallows – J.K. Rowling
Let’s see… Harry sees a bat-like creature… and it’s flying… Hmmm… Can anyone tell me what kind of creatures have bat-like features and can fly?
Yes, a bat! 150 points to the Hufflepuff student in the third row!... Those Gryffindors and Slytherins get enough attention as it is and Ravenclaws are too smart for their own good anyway. (Just ask Helena Ravenclaw, sometimes about the mess she and the Bloody Baron made after she stole her mother’s tiara!)
That’s right – the renowned potions master, Severus Snape, must have been an unregistered animagus as a bat!
Comments and accusations are certain flies, with people trying to put me in my place for suggesting such blasphemy, but it fits his personality all the way around if you think about it.
Because if Snape was anything, he was tenacious and completely capable. Snape would have known how to become an animagus, and he certainly had the tedious patience to achieve it.
And most certainly, the motivation.
Remember, Snape had learned his other worst-enemy, Sirius Black, was an animagus. Severus even made a snide comment about Sirius giving himself away by joining Harry at King’s Cross Station when he left for Hogwarts in …Order of the Phoenix.
Sure, maybe Snape just transfigured his limbs into wings. He was a pet of Horace Slughorn, after all, and we know Horace could transfigure completely into an armchair. Maybe Snape learned that trick from his old mentor.
But, come on, guys, whether you love him or hate him, do you really think, of all people, Severus Snape would be satisfied with accomplishing anything less than what his two most hated enemies achieved?
Hell, Snape probably figured if that loser, Peter Pettigrew, could do it, then it should be a piece of cake for him! In fact, Severus probably drilled him about how they did it when Wormtail was stuck with him at Spinner’s End.
So, I’m of the mind that Snape absolutely became an animagus – possibly sometime between …Prisoner of Azkaban and …Deathly Hallows.
Probably during one of the summer breaks when Voldemort couldn’t touch Harry because he was snug as a bug in a roach trap at 4 Privet Drive with the Dursleys.