In Annie's training montage, when C.J. first sees her on the tower her special harness is hanging on a railing. When C.J. calls her down, Annie wears the harness even though there is no indication anyone put it on her.
When Annie gives C.J. her locket, she raises it up to her face with her right hand. But it one shot, she is still holding it near Annie's nose with both hands.
When Cassie recovers on the beach, a man with a baseball cap and glasses can be seen standing behind both her and Mitch, even though they face each other.
C.J. states that Annie was found without a collar or tags. However, in shots of Annie swimming she does have a collar.
Caroline claims she cannot be a reincarnated goat because she's allergic to wool. Wool comes from sheep, not goats.