This is what's written in Arthur Spiderwick's Field Guide to the Fantastical World Around You about Ogres. Ogres often trade on their strength, despite having 'better than average' intelligence. They live as scavengers, bullying humans and other faeries into giving up their food, land, and wealth. Luckily, ogres are both vain and lazy, attributes often leading to their downfall. Descended from giants, ogres are quite large in their natural form. They have the ability to shape-shift into creature