It might be that the blanket has something on it that attracts the cat's attention. Or perhaps the cat has formed a habit of taking things it likes, including the blanket.
Maybe the cat is cold and wants to stay warm. That's why it steals the blanket.
A cartoon cat blanket usually has cute cat designs and is soft and cozy. It might come in bright colors to make it visually appealing.
Maybe the bully has some sort of twisted reason or just wants to cause trouble. It could be for attention or to show off his power.
Maybe he steals because he's desperate or has some kind of need that he can't fulfill through normal means.
Maybe it's hungry and has no other way to get food. Or it could be part of the story's plot to create some excitement.
Maybe it's cold and the blanket keeps it warm.
Maybe he was under some evil curse or had a crazy transformation experiment gone wrong. That's why he did such a creepy thing.
Maybe they feel cozy and secure. A blanket gives them a sense of comfort and helps them sleep better.
It could be that it's nap time and the blanket provides the right warmth and comfort for her to fall asleep. Or perhaps she had a busy day playing and now needs to rest.
Maybe she's just tired and wants to take a rest on the blanket.
Maybe it's seeking comfort or just playing around. Who knows for sure?