Falco Aesalon — Falcon; the first recorded Animagus; the registration system was not in existence in his time.
They are James Potter, Sirius, Wormtail, Skeeter, McGonagall, Talbott Winger, and an unnamed witch who can turn into a cat. The fact that there are so few Animagi just causes us fans to want to know more about them. After all, they are some of the most unique characters in all of Harry Potter.
Hermione Granger
The fox is well known for its intelligence, inspiring the popular phrase “to outfox” someone, meaning to beat them in a battle of wits.
Animagus. Lily's animagus form is a Doe, coupling with her husband, James Potter who is a Stag. Severus Snape's animagus is also a Doe.
Because there was no need for him to become one. Besides he had lot of other important stuff going on in school unlike his father and his friends who were determined to help Lupin.
“A creature I wouldn't want to kiss . . . a spider!” Harry figures out the riddle, and realizes that a spider is about to attack. But what he doesn't realize is what I now believe: that the spider in the maze is Professor Snape, in his Animagus form. It is Spider/Snape who bears down on Cedric and Harry.
He didn't mention that Sirius was an Animagus to Dumbledore because he didn't want to admit to breaking his trust while at school. All in all, Remus did the most to help Harry and the wizarding world.
For example: if Viktor Krum can transfigure his head into a shark's, like he does in Goblet of Fire, that doesn't mean he is an Animagus. Transfiguration is a form of spell-casting, whereas becoming an Animagus is forever. And yes, he could turn into a falcon.
Nymphadora Tonks, who we first meet in Harry Potter and the Order of the Phoenix, is a Metamorphmagus. She tells Harry that the ability helped her greatly in the Concealment and Disguise in her Auror training.
Following both ordeals, Ginny grew into a confident young woman. Her and her friends followed in the footsteps of a previous generation, completely unbeknownst to them, and became Animagi at the age of fourteen, to support their best friend, Maisie Cattermole. Ginny took the form of a grey mare.
Ron (Ant that has wings) - Loyal to the queen, and willing to die to save the queen as well. Also quite social.
Also one's Patronus and Animagus forms can be the same. So by that logic it is fairly plausible that Dumbledore's Animagus form could have been a Phoenix.
Summary: Basically, I read a fic (The Houses of Pendragon, Emrys and Potter), and in this fic, Merlin's animagus is a black dragon.
Peter Pettigrew's Animagus form was a rat. Colloquially, a "rat" is a snitch or informant. Webster's also lists the following possible definition: "a contemptible person: such as... one who betrays or deserts friends or associates."
In Harry Potter and the Prisoner of Azkaban, Remus Lupin shared that it took his fellow Marauders – James, Sirius and Peter – until their fifth year at Hogwarts to finally become Animagi and keep him company in his werewolf form.
Was Voldemort an Animagus? No, Voldemort was not an Animagus. He didn't see any reason to become an Animagus despite being a gifted wizard and knowing a lot of magic. This may simply be because his sole purpose was to obtain immortality and become the strongest wizard who could control the world around him.
James's Animagus form was that of a stag, which earned him his nickname, Prongs. Strikingly, Harry's Patronus was a stag and his mother Lily's was a doe, a female deer, showing that the family's characters were in harmony and formed part of the same animal group.
The 'Inner Eye' is often said to be a rare and much sought-after skill in the wizarding world, with many in the community looking to Seers to find the answers in life.
Teddy Lupin did not become a werewolf like his father. He was, however, a metamorphmagus, like his mother.
Godric Gryffindor never died. He is an animagus that took the form of a phoenix and can no longer transform back to his human form due to it being so old.
He probably did suspect it. In fact I think early in the book Harry mentions to Lupin that he has had an encounter with the Grim - a big, shaggy, black dog. So Lupin almost certainly knows that Sirius is using his animagus for to stay out of sight, if not to break out of Azkaban or into Hogwarts.
Harry discovers this in Prisoner of Azkaban, when his Patronus turned out to be a stag, his father's Animagus form.
Sirius's early life proved unhappy; he had come to hate most of his relatives, in particular his mother. He rejected his family's pure-blood elitism and reverence for the Dark Arts. At Hogwarts, rather than be sorted into Slytherin like the rest of his family, Sirius was placed in Gryffindor.
The rare forms include creatures like hippogriffs, unicorns and thestrals, which don't seem like viable Animagus forms. It's not impossible, but it just doesn't seem too plausible that someone could transform into a dragon.
Sirius Black had a lot of love in his life. Mainly for his best friends but still. One of the greatest loves came not from his connection to James Potter but rather with his relationship to Remus Lupin.