Ok, just listened to the YouTube clip I linked to and noticed some things.
1. Additional music. I don't remember hearing this before but it occurs twice. There is a brief sting as the Keeper exits the menagerie, and one as he enters after Colt and No. 1 have beamed down.
2. Pike lets out several pained screams during the hell pit scene. This is interestingly on the 1986 version's introduction.