What is the name of Ron's rat (who is actually Peter Pettigrew)?

The story behind the answer

Scabbers is the name of Ron Weasley’s pet rat, later revealed to be Peter Pettigrew, an unregistered Animagus who hid as a rat for twelve years after betraying the Potters. Clues appear early: Scabbers is unusually old, sickly, and missing a toe—mirroring Pettigrew’s missing finger after faking his death and framing Sirius Black. His true identity is exposed in The Prisoner of Azkaban.

To remember it, think “Scabbers” = “scabby”: a shabby, unhealthy rat that fits his appearance. “Scab” also hints at betrayal—someone untrustworthy—matching Pettigrew’s treachery. The reveal introduces Animagi and deepens the backstory of the Marauders, showing how one seemingly minor pet ties into major events in the Wizarding World.