The Quader is a classic example of an animal hiding in plain sight. The Quader is more commonly known as a marker cap. But, don't be fooled, these sneaky little critters are very much alive. Once it is attached to a marker, it sheds its legs. After, it looks, feels, and acts like a marker cap. An exception is a slight change of color for its eyes. Usually it is asleep during the day, so you can't see the eyes but at night it wakes up and starts to drink the ink from the marker.
Over the years, the Quader has adapted to the horrible treatment of kids. The constant removing of the Quader from its food source has pushed the species into a corner. But, the species has pushed past the hardest times and has adapted to these horrible conditions. The Quader is now more tolerant long periods of little to no food to eat. It also has a harder exoskeleton and it can with stand more impacts. Also, after a Quader has found a suitable marker, it loses the ability to move. (This usually happens a few days after birth.) Due to the lack of mobility, the Quader reproduces asexually.