1. Poop in the litter box when they visit.
2. Eat a spider and puke it up in front of them.
3. Hide a dead bird in their shoes.
4. Eat their food.
5. Put dirty paws and hair in their drink.
6. Cough up a fur ball into their lap.
7. Claw their feet constantly.
8. Scratch scalp then piss on their bloody head.
9. Claw out an eyeball, or two.
10. Scratch and bite genitals like a dog.