Raging monsters

Monsters raged around the room. They leaped onto the dresser, and crashed into the bookshelf. No area was safe from their rampage.
The little boy shivered and gripped his blanket tighter. Surely the monsters couldn't get him in his bed.
Right?
Wrong.
The little monster pounced, and the boy let out a squeak as he tugged the blanket over his head. The little monster landed right on top of the blanket.
A moment passed, then there was a thump as the larger monster landed on the bed.
"Help!" The little boy cried, and felt the bed shift as the monsters moved closer to him.
The blanket was pulled away from his face, and something cold and wet touched his nose.
Suddenly, light filled the room, blinding the little boy.
As he blinked away spots, a black fur and brown eyes filled his view.
"Jimmy, we've already told you, no animals on the bed!" The little boy's mother said, her hand hovering over the light switch.
"They aren't animals, they're monsters!" The little boy named Jimmy protested. The black lab licked his nose again, and the annoyed cat took it as his chance to flee out of the room.