Hi guys, Mila here.
Today I have more interesting dog facts about dog’s eyes.
Now we’re getting a little scientific:
Dogs on average have a total visual field of 250 degrees. The degree of binocular overlap is approximately 85 degrees for a short nosed dog versus 75 degrees for long nosed dog. In comparison humans have a binocular vision of about 120 degrees.
Still, dogs enjoy a visual advantage: Human eyes are located directly on the front of the face, while dog’s eyes usually sit a little shifted to a paltry lateral position.
Because of this, a human’s total visual field is only 190 degrees. Remember, we dogs enjoy enjoy around 60 degrees more of peripheral vision, a total visual field of 250 degrees.
However, these are only average numbers, because the visual field of dogs actually depends on the shape of its head and therefore varies among breeds.
Hi everyone, it’s me again, Mila. Hope you’re all doin’ good.
Here’s another smart dog fact to make you all geniuses.
Let’s talk about dog’s eyes today:
After their birth the eyes of puppies do not fully open before they are about 12 days old. This is different from humans. Human babies usually open their eyes right at birth.
An get this! Every dog has not one, not two – no – THREE eyelids. The third eye lid is called “nictitating membrane” or “haw”.
It serves the purpose of keeping the eye lubricated and protected. In some breeds it is more visible than in others. You may have already wondered about that opaque membranes in your dog’s eyes.
Scientists for a long time assumed that dogs cannot see any colors. Newer studies however suggest that this assumption is wrong.