The canine retina contains more rods than cones allowing better night vision sensitivity.  

Dogs have a special reflective eyewear layer that amplifies dim light for after-dark adventuring.

While blurred, dogs capably perceive movement and shapes in dark environments.   

Dogs sacrifice sharp central focus for panoramic peripheral vision to notice approaching objects.

Dogs see only shades of gray rather than vibrant color across lighting conditions.  

Dogs trade excellent night watch for worse vision clarity when bright than humans.

Some breeds like retrievers bred to hunt before dawn have elite night perception.