I saw nothing out of the ordinary. But then, I am not a dog so I obviously missed it whatever it was.

Although Lucy is always ready for a game of Chuck-it!, she still keeps an eye on things.
This fox and I regarded one another with a mutually safe distance between us.
On a gloomy afternoon, a Snowy Owl watches me watch him.
A House Sparrow keeps a watchful eye on me as it cracks open a sunflower seed.
Lucy keeps a sharp eye out for squirrels or any other animals that might dare to trespass in our back yard.