That old saying that spiders drink your tears while you sleep? Sorrow-spiders take out the whole eye. Sorrow-spiders are terrifying arachnids that grow to about the size of a cat. It turns out that sorrow-spiders can actually be tamed; apparently, they can be quite intelligent and prone to ambition. Now, what is their ambition? "These little charmers sneak into the bedrooms of sleepers and bite their eyes off. They take them back to their nests and do...what? No-one's actually seen them eating the stolen eyes." Instinct: to take your eyes

• Bite out an eye
• Lay a silken trap
• Spin a sticky and valuable silk