This book is adorable. It is the perfect length for a bedtime story, and a great resource for parents who have kids at the '[monster] why?' stage. It is also a fun little book for young readers. Short, one and two sentence descriptions of monsters are surprisingly fitting, and won't lead to nightmares. The monster pictures are sweet.
This author has three 'books of monsters'... Halloween, Ancient Greece and Dragons. They are all similar in style. Short, sweet and fun.