Babyies and nightmares?

Hmm...I really wonder if babies have nightmares. Was putting my gal down to bed at her usual timing though she was fussing quite abit during the last feed...Not sure if it's due to slow milk flow or simply she's full and yet forced to drink or simply cranky. However, after 50min she let out a loud cry as if suddenly awoken by some unknown fear. After some quick carrying and patting by my hubby she went back to sleep. Sure hope she sleeps tight from here on.