<p>Andrew Stack has filmed his cat exploring the world in all sorts of ways, whether he’s learning to use a kitty toilet or watching birds on television. Although Leo is clearly a curious cat, he still has a fear of the unknown. This video shows Leo testing the boundaries of a circle Andrew has made using tape on the carpet. Most cats seem <a class="link" rel="nofollow" target="_blank" href="https://www.youtube.com/watch?v=QQa7ijLkidw" target="_blank">happy to explore</a>, but not Leo. We can only guess why he decided it wasn’t safe to enter. Credit: YouTube/Andrew Stack</p>
