There’s a quote you may have heard:
“Yes, it’s rather funny, really, that next to no-one realised the snake that Harry set free in Philosopher’s Stone turned out to be Voldemort’s final Horcrux, Nagini.”
— J.K. Rowling
Yeah, you may also have heard that it isn’t remotely true. The snake from the first book is a Brazilian boa constricter which is non-venomous whereas Nagini is poisonous (She bites Arthur) and Voldemort probably found her in the forests in Albania where he was hiding. In the films the boa constricter is given a male voice but Nagini is female. The boa constricter is also described as having ‘glistening brown coils’ whereas Nagini is green.
So yes, NOT TRUE, IT ‘S A FAKE QUOTE.
Sorry, I just saw someone repeating the supposed ‘fact’ again hence all the caps and bold type.