Many, many years ago my Mum, Sister and myself were watching a spooky film and as the tension in the room was rising our old cat, who was lying sleeping along the top of the sofa, clearly thought she'd show a wee bit of solidarity and support for her scared humans. So she silently and slowly reached out and gently popped a reassuring paw on my sister's shoulder which nearly caused her to hit the ceiling and her shrieks scared the hell out of my Mother and myself. The cat was most miffed at the stupid humans reaction!
At the same time as the old cat was alive we had a budgerigar who was normally one forceful package of feathers. He was a sweet soft green boy budgie who was mine but oh heck did he have a temper especially if you didn't go to bed by ten pm. This wasn't great for a family of late bedders and many-a-night we'd end up going because he set up such a racket that the tv couldn't be watched, or more correctly heard.
Anyway, one night we were trying to watch Hitchcock's The Birds and as usual by 10pm he was doing his go to bed antics quietly, then more loudly as we weren't budging. So one trick was to pop his cover over him which sometimes fooled him. And on this occasion it worked but only for a short while. In the scene where the birds are attacking he decided to chirp up by shouting "Good boy" and "who's a Good Boy" which totally ruined the film as we were laughing so much at him. My little palm sized bird-brain could not have been any match for Hitchcock's birds.