At about the 6:35 mark, Dr. Quest says "He, uh, spoke of dragons," but it's Race Bannon's (Mike Road's) voice that comes out.
When a dragon is ordered back to its pen, it backs into it. For one thing, lizards can't back up very well and need to swing around; for another, the reverse movement of its tail reveals that the cells were filmed in reverse order (virtually the same as if the footage was run in reverse).