When I was in school, my parents bought a Siamese, called Limo Simba (Lion Tiger)
We lived in a rented property, with an agent who was very intrusive.
He would never give advance notice of inspections, but just turn up when he felt like it, then hang around after finishing the inspection waiting for Dad to offer him beer.
So Dad taught the cat that the chair the agent sat on was it's chair.
The next time the agent sat on the chair he found himself with a seriously P'd off cat with all it's back arched, fur sticking straight up and it's eyes fixed on the chair cushion.
Where his family jewels were invading her space.
One glance and he turned green and bolted for the door.
Another little story about Simba. Dad was the only person who could pick her up and he would only do it while wearing his welding gloves and leather apron (he was a blacksmith welder).
One day while lifting her out of our car, he turned around to find an old half-blind dog behind him.
Cat & dog came nose to nose and Dad had to buy a new apron and gloves.
Seriously, there were deep scratches all the way up his arms and across his chest.
Remember the Looney Tunes Tasmania Devil and you will get the picture.