R.L. Stine 
Nightmare Room #6: They Call Me Creature [EPUB ebook] 

Meet Laura. She’s the tall girl holding two stray cats. Laura loves caring for animals. But lately, the animals in the forest near her home have been acting strange. Bats swarm and attack in broad daylight. On her walks, Laura hears eerie howls and inhuman cries. And now, she is about to meet another animal. An animal so ugly and evil, it can only be described as a creature. Poor Laura. Sometimes a path through the forest can lead to The Nightmare Room