"The Lion King" turns 25 in 2019 and a remake of the film is out.

INSIDER interviewed codirector Rob Minkoff and producer Don Hahn at the D23 Expo in 2017 and attended a panel celebrating the movie.

We also listened to the audio commentary on the signature edition of the film.

Whoopi Goldberg begged to be a part of the film and an early version of Elton John's now-iconic "Circle of Life" was awful.

"The Lion King" has been remade for a new generation, but how well do you know the original animated classic?

INSIDER spoke with director Rob Minkoff and producer Don Hahn to learn more about the making of the movie. We also attended a panel with animators Mark Henn and Tony Bancroft, voice actor Ernie Sabella, and Whoopi Goldberg where they revealed behind-the-scenes secrets from the making of the 1994 film.

In addition, INSIDER listened to the audio commentary on Disney's signature edition of the "Lion King". Keep reading to see what you probably don't know about the animated classic.

This story has been updated from 2017.