Spoiler
"The lavender hedgehog is a small furry animal that has learned to adapt well to its environment. The lavender shrubs on its back are meant to protect it from predators- acting as a camouflage. Furthermore, the lavender also has magical properties. The hedgehog can make its enemies fall asleep should they become a threat.
In the Keep, these hedgehogs make an excellent companion, especially for those magi suffering insomnia. These companions aid their magi to have a peaceful slumber by releasing the scent from their shrubs."