In the video, a large brown dog is sitting on a wooden floor next to a window. The dog is looking out the window, and a mountain lion is outside the window, looking in. The dog appears to be calm and curious, while the mountain lion seems cautious and alert. The window is open, and the outside environment is visible, with trees and bushes in the background. The lighting in the room is natural, and the dog's fur is a rich brown color. The mountain lion's fur is a lighter brown with darker spots. The dog's ears are perked up, and its tail is wagging slightly. The mountain lion's ears are also perked up, and it is standing on its hind legs, peering into the room.