A Boulder, Colorado house cat that goes by the name of Zeus got an up-close-and-personal look at a feline that’s a bit higher up on the food chain.

According to the Denver Post, Gail Loveman was working in her home office when she heard a commotion on her front porch. Upon investigating, she spotted her 11-year-old Main coon cat standing face-to-face with a young tom cougar — the unlikely duo were separated by a sliding glass door.

Loveman revealed to the Post that “(the cat) typically stands tall, hisses and acts fairly aggressive when he sees other animals – mostly squirrels, other house cats or even dogs – through the glass door. But Zeus remained calm as he appraised the big cat.”

For the full account and additional images of encounter, make sure to visit the Denver Post.