I’m not sure if I should be worried? She often sleeps on the sofa during the late pm/evening but it can happen if she’s asleep on the floor too. She’ll be asleep and then a noise will wake her, eg DH coming into the room, (it happened just now while I was curled up with her on the sofa), and she’ll startle and bark a few times, then growl and bark alternately a few times until she’s calmed down then she lies back down.
Is the growl here aggression (at whoever is disturbing her) or just a sleep startle like a human would have a night terror or something?