I’ve seen my cat defend his territory from a big ~110 lb [50 kg] lab that wouldn’t leave him alone by jumping on its face, clawing its eyes and riding him down the street.
Cat walked back to the exact spot he was originally and laid down. Never saw the dog again.
Cats know prison rules
I go to sleep every night listening to history documentaries, spy, mafia, religious history, etc with the audio only. As long as the voice is good and not overbearing background music or effects, it puts me out super quick and I slowly learn a lot