Imagine Gail Loveman's surprise when she turned away from her computer and suddenly saw her housecat, Zeus, staring down a mountain lion through a sliding glass door. Bad kitties!

Despite her obvious shock, Loveman had the presence of mind to grab her camera and the resulting photos of the stare-down became an instant internet sensation.

Loveman described the amazing encounter in an interview with Denver NBC affiliate 9News. Watch the story below.

[via MSNBC]