Kinktionary
More like guidelines and a lot less like definitions.
Little Monster
A creative and very active combination of the little and monster roles. The playfulness of the little role is often combined with bratty aspects.
They often exhibit cute behaviour but can be aggressive or combative (e.g: baring their fangs and claws. They come in many colours, fur types and energy levels. The monster side can be sleepy and cuddly as well as fierce and active.
Beware for little monsters! They will steal your heart.