This is an irrefutable example of a domestic cat protecting a baby from a man (the father) who pretends that he is hurting his baby. It is a rather bizarre video really because I disagree with the behavior of the man. There is something distasteful about it. However, the behavior of the cat is first rate. I don’t think the man gave any thought to how his actions might affect his relationship with his cat.
We can see that the cat understands that the man (a person she knows) is hurting the baby who she also knows. How is this information processed by the cat? Does she begin to believe that the man is bad and dangerous? She might. If she does it might affect the relationship between cat and man.
You can tell that in the past the cat has defended the baby because the parents decided to make a video of it and to make the video they had to set it up and pretend that the baby was being hurt. But was the baby really hurt before? A wild question no doubt.
Anyway the video is excellent in one respect: domestic cats form strong bonds with babies once they overcome their initial anxiety and they also seem to treat them as their offspring in coming to their defence (or perhaps friends).
Also it tells us that cats understand when harm is being done to humans by humans although it was faked in this instance.
To me it raises the profile of the domestic cat. It hints at a level of intelligence for which the domestic is not often credited. I hope it serves to encourage cat owners to relate to their cat companion in a more enlightened way.