Some studies from today (and last week)! An ant, ant-mimic, and some spiders (mouse and long-horned orb spider respectively). Eye-placement on the mouse spiders is inconsistent because the photos I had were… unclear on where the eyes were, so I drew them where I thought they were based on reflections and shadows.
This appears at first glance to be a fairly unremarkable red ant- but count the legs! This, amazingly, is an ant mimic spider. Entomologists believe that this mimicry evolved both for hunting and for avoiding predators such as the spider wasp.