During level 10, after you have rescued Russell, you will find yourself back at the beginning of the level (the elevator on the side will be a dead giveaway). You will need to push a museum display in order to get to Kevin and, after pushing the museum display, you will see two doors.
To the left, there will be door that will progress the story and miss your chance. On the right, there will be a door with breakable material leading to a secret area with the Golden Jaguar statue.
** NOTE: I don't know if this has or will happen to anyone else, but I played through this level several times and every time, while trying to get the statue, I hit an invisible wall. The right door would open, but I couldn't get inside due to the invisible wall. I fixed this problem by opening the left door (not going though it) and returning to the right door. I got in no problem. **