The Green Pact, also known as the Treaty of Frond and Leaf, is a strict code upheld by the Bosmer of Valenwood, which prohibits the use of any wood or vegetable matter of Valenwood as building materials, and requires that Bosmer be strict carnivores. This non-vegetarian practice is part of the Meat Mandate, a section of the pact that also states a Bosmer must eat his fallen enemy; this cannibalistic nature sets them apart religiously from other nations. The Bosmer allegedly made the Green Pact with Y'ffre the Forest Deity in return for Y'ffre's patronage and perhaps protection. As a result, the Bosmer use bone, animal, and insect products widely; imported wood is used when necessary. There are also almost no cities or towns built by the Bosmer themselves. Additionally, the Green Pact made the felling of trees by anyone, foreign or native, a crime against the Bosmeri religion.