দ্বারা the time Harry and Ron went into the forest, Hagrid was already in Azkaban, for a crime he never commited. The boys took Fang with them when they went to meet Aragog, who almost killed them. Hagrid never went into the forest in either book অথবা movie.
If আপনি are talking about the সেকেন্ড movie, it was Ron and Harry, but only following Hagrid's উপদেশ (he had already been taken to Azkaban and was unable to accompany them). If আপনি meant the first movie, it was Harry, Ron, Hermione, and Draco (in the books, it was Harry, NEVILLE, Hermione, and Draco; Ron had not been প্রদত্ত detention).
Ok first movie was Draco,Ron,Hermione,Harry and fang. সেকেন্ড was just Ron and Harry cause hagrid never went into the forest in the সেকেন্ড as everyone already pointed out! Haha