Tupperware is usually a great place to store items you don’t want animals to get at, such as cats. However, Allison Riebel decided to bake some cookies and put them in a Tupperware container for sake keeping. Little did she know that her cat, Nellie, would find them.

Nellie apparently found a way to open the tupperware container and take a bite out of each cookie. When caught, Nellie seemed pleased with herself for solving this tupperware puzzle, which makes it hard to punish the cat for its cleverness. In case you have a cat, make sure your cat doesn’t learn from Nellie or nothing will be safe in your house again.

To learn more about the cat that can open tupperware, click here.