Nightmares ! I'm sure Harvey just had a nightmare he woke up screaming like I have never heard befor…

Nightmares ! I'm sure Harvey just had a nightmare he woke up screaming like I have never heard befor I atomaticly picked him up thinking he was in pain from his teeth but he was screaming at me trying to get away skakeing 😢 I sang and talked to him and then he just snapped out of it looked at me and snuggled down to sleep 😟 is this normal ? Do they have nightmares ?