On the wiki it says that nagini is likely to be either an anaconda or a boa constrictor, this makes no sense because we know that nagini is venemous and neither of those other two snakes are
Here you are:
“Yes, it’s rather funny, really, that next to no one realized the snake that Harry set free in Philosopher’s Stone turned out to be Voldemort’s final Horcrux, Nagini.” —J.K. Rowling
- Where and when exactly did JKR say that? Link or it didn't happen. —The preceding unsigned comment was added by 188.8.131.52 (talk • contribs).
- Horcruxes have their own ways of defending themselves, so it is possible that Nagini was never venomous until after she became a horcrux. It's possible that she is a boa constrictor.—The preceding unsigned comment was added by 184.108.40.206 (talk • contribs).
- Nagini is a reticulated python and I'm 100% sure that it looks exactly like one since I work at a reptile shop. Reticulated pythons are the longest in the world and can grow to 35ft. Where in the movie does it ever say Nagini is venomous? She is a large constrictor.
- It says in the book that she's venomous - that there's something in her venom that keeps Arthur Weasley's wounds from healing properly. Oh, and for the record, per Harry Potter: A Pop-Up Book, the filmmakers' intention was to model Nagini after a Burmese python, though with some creative license, as Rowling described the snake as being much longer than an actual snake of that type. ProfessorTofty 02:17, January 23, 2012 (UTC)
- In the 1st book the snake let loose by harry is described as being a Boa Constrictor and considering the sign identified the species' origin as Brazil, it is implied that it is a Common Boa Constrictor (r).
- The snake portrayed in the 1st movie could be either a Burmese Python or African Rock Python, as they look almost identical. Because the sign in the movie says the snake is from Asia we can infer that it is a Burmese Python. I don’t believe Nagini's appearance was ever likened to a particular snake by Rowling, only that it was over 12 feet long. Based on that distinction we can safely presume that she is a type of constrictor, either a boa or python, considering that a King Cobra is the only non-constrictor to average 12 feet or more in length. Though the King Cobra possibility might explain why Nagini might be venomous, there is absolutely no way a cobra could ever swallow even a baby much less a full grown adult human.
- In the Goblet of Fire movie Nagini is animated to be a Burmese Python, essentially. In the later movies Nagini is portrayed as being identical to a Reticulated Python.
- Given all the information I’ve just given, we are able to come to a few conclusions:
Armed with these facts one can only conclude that either Nagini is a unique creation of Rowling's mind not based on any real snake or is one of the aforementioned 3 snakes that has had a permanent engorgement charm cast upon it as well as a spell to augment her with poisonous fangs.