The potion which allowed Lord Voldemort to return needed three important ingredients: bone of a father, flesh of a servant and blood of an enemy. Pettigrew severed his right hand in order to supply the second ingredient. When Voldemort returned, Pettigrew begged for a new hand, as Voldemort had promised him beforehand.
In 1981, he cut off his right index finger as part of a ploy to fake his own death, which is reflected in his "Scabbers" form, and, fourteen years later, he cut off his entire right hand at the request of Lord Voldemort.
The specific finger Peter Pettigrew is missing is his right index finger. This detail is significant to the plot of the series, as it serves as evidence that corroborates his faked death, allowing him to avoid capture and imprisonment for his betrayal of the Potters.
If Wormtail had requested to cut off just a finger, rather than his whole hand, Voldemort would accuse him of being disloyal and not willing to make sacrifices for his master.
Why Voldemort Called Peter Pettigrew 'Wormtail' - Harry Potter Theory
Did Wormtail regret betraying the Potters?
However, despite his treacherous and cowardly nature, Pettigrew did feel some regret for betraying his friends, and he hesitated to kill Harry Potter when reminded of his life debt, in 1998.
However, Harry reminded Pettigrew of saving his life in four years ago, and Pettigrew released Harry in an unintended and momentary show of mercy. After Pettigrew tried unsuccessfully to undo that moment of weakness, the hand recognised Pettigrew as unfaithful to the Dark Lord and suddenly began strangling him.
Pettigrew hesitated for a few seconds, something his enchanted silver hand interpreted as weakness. This brief moment of mercy caused his silver hand to turn against him, ultimately strangling him to death.
Although the slimy character was close friends with James during their time together at Hogwarts, Pettigrew ultimately abandoned his friends to join the dark side. In order to prove his loyalty to Voldemort, Pettigrew was obligated to hand over the Potters' hiding location, otherwise he would be killed.
Was Peter Pettigrew the only Gryffindor death Eater?
Peter Pettigrew. Peter Pettigrew (a.k.a. Wormtail) is one of two Death Eaters known to have been in a House other than Slytherin (Gryffindor) while at Hogwarts. There, he was a close friend of Sirius Black, James Potter, and Remus Lupin, although he was the least intelligent and least talented of the group.
He used the Black Quill during many detentions, from 5:00 p.m. to well over midnight, until he acquired a scar on the back of his hand reading "I must not tell lies".
Wormtail's silver hand strangles Harry, as Ron struggles with Wormtail's wand hand. Harry reminds Wormtail that he owes a life debt to Harry, and Pettigrew hesitates; sensing the hesitation, Wormtail's silver hand turns on its master and kills him.
But if Peter didn't betray the Potters, Voldemort would've killed him, and Sirius and Remus would be grieving over Peter's death, but they would also stay strong for him and remember Peter as a brave soul who risked his life to protect the Potters.
Scabbers was Ron Weasley's pet rat. Passed down throughout the family, by the time he came to Ron, Scabbers was living up to his name with patchy fur and a distinct preference for sleeping. Although Scabbers was a loyal companion to Ron, the rat wasn't all that he seemed and was in fact hiding a terrible secret.
Werewolves might be dangerous to humans, but they don't attack other animals; so Lupin's friends found a way to stay together as a kind of pack. James's Animagus form was that of a stag, which earned him his nickname, Prongs.
Peter Pettigrew was a member of the Marauders before he betrayed his friends in Harry Potter, but that choice makes no sense. Even more so than the magical elements, the Harry Potter franchise can be defined by its relationships.
Sirius Black is introduced in the third Harry Potter installment as the Prisoner of Azkaban, a dark and menacing figure feared by the Wizarding World almost as much as Voldemort himself. Everyone believes he's a mass murderer who betrayed Harry Potter's parents to the Dark Side.
Peter Pettigrew, the Secret Keeper for the Potter family who betrayed them to Voldemort. Sirius Black was originally meant to be the secret keeper for James and Lily Potter, but Sirius thought Voldemort was on to him (he thought that Remus Lupin was a spy), therefore passing on the Secret Keeper to Peter Pettigrew.
Remus fought at the Battle of Hogwarts on 2 May 1998, during which his wife was murdered by Bellatrix Lestrange. Remus was also murdered by Death Eater Antonin Dolohov, during the first half of the same battle. His death was possibly avenged by Filius Flitwick.
Under the influence of her father, Dolores grew up despising her mother and brother for their lack of magical abilities. She was sorted into Slytherin House at Hogwarts School of Witchcraft and Wizardry and hated her time at the school due to never being given any positions of power.
Summary. Peter Pettigrew's betrayal of the Potters and allegiance to Voldemort was a result of his unhealthy admiration for James and desire for power. Sirius Black was believed to be the Potters' Secret Keeper, but he secretly switched with Peter Pettigrew, who turned out to be a mole.
Unless Fred and George were watching Ron sleep on the map (which would be creepy), they wouldn't have noticed Pettigrew. It's only possible to see a human changed in his animagus form if you know the person is one. Therefore: Remus saw Peter on the map, he also saw Sirius. Harry DIDN'T see either.
