I’m under the impression that Google deliberately hinders their YouTube platform just because you have ad-blockers. With videos taking time to buffer, seems to signal this, because it almost makes up nearly the amount of time for when ads take if you had to watch them. So since you’re ad-blocking and they don’t like that, they’ll make your experience miserable until you want to pay their service or not use ad-block.
Cat ears are more sensitive and more directional than ours; their little dorito ears have more gain, and they can swivel them around. If you ever see a cat staring at apparently nothing, she’s probably not looking, she’s probably listening, and depending on how her ears are configured maybe not in the direction her face is pointed.
A cat is staring at a wall outlet? The wires might be loose and arcing, causing a ticking sound that pushes the “rodent detected” button in kitty’s head.