No matter how cute, or small, or cuddly a monster is, you MUST NOT take it home with you. Monsters have no upper size, and as long as they are fed and have room to grow they will continue to get larger and stronger.
Even if it is cuddly, or obedient, or speaks your name, DO NOT TRUST IT. Report the monster to your parents or another adult as soon as you can. Do not give it food, do not touch it, do not do as it tells you.
If you are found to be harboring a monster then you WILL be punished to the full extent of the law, no matter your age or reasons.
If it is found that you have made a contract or been granted powers by the monster then you WILL be subjected to magically induced questioning and could possibly even be qualified as a monster as well.
Keep your neighborhood safe! Tolerate no monsters to enter!
-Part of a speech on public safety given to elementary students.