I don't think there's anything offensive. Unless you're offended by monkey pee.

The scene where the T-Rex first comes to life made my daughter very nervous, even though she knew ahead of time that it was going to be a FRIENDLY T-Rex -- there's ominous music and spooky camera angles while a frightened Ben Stiller prowls the museum and you're waiting for something to pop out at him. Once the dino actually appeared, she was fine.