Dog eyes have more rods than humans, which means they can see much better at night. Dogs also have a layer of eye tissue that humans lack called the tapetum lucidum, it reflects light into the retina.

"Some dogs don’t react well to being woken up suddenly," explains Dr. MacMillan. "They might startle easily due to their ...

With fewer cone types, dogs can't distinguish between as many colours ... Their eyes have evolved to be up to 350 times more sensitive to colour at night than ours. Although the eyes of garden snails ...

Canada Info from Licensor: "My Frenchton dog Jasper is a funny creature. Sitting on the couch one night, he fell asleep and started snoring loudly. Funny part is that his eyes are open but he is fully ...