Maybe it didn't get the cheese it wanted.
It could be that another character teased or bothered it. Sometimes, the simplest reasons can make a cartoon mouse angry.
The angry white cartoon mouse could be popular because it represents a certain emotion or character trait that people can relate to. Also, good marketing and promotion can contribute to its popularity.
An angry mouse cartoon might show the mouse with a scowling face, standing in an aggressive pose, maybe with its fur standing on end.
Cartoon angry mouse eyes are usually wide open, with narrowed pupils and sharp eyebrows to show the anger.
Perhaps the story shows the angry girl mouse trying to protect something important or standing up against injustice, which makes her angry.
Well, it could be that someone was mean to him or he didn't get what he wanted. Sometimes, it's just a build-up of little things that make a person really angry.
Maybe he had a bad day or someone did something mean to him.
Maybe it didn't get its favorite treat or someone took its toy.
Maybe it got disturbed or someone took its honey.
The cartoon cat could be angry because it was disturbed while sleeping or its playtime was cut short. Sometimes, even the smallest things can set it off!