Cats and dogs vision
  • If you take a flash picture of your cat or dog, their eyes will get an eerie glow. This is because a layer of their eyes reflects light to let them see small amounts of light more efficiently.
  • Cats and dogs are not colourblind. However, they appear to see the world in shades of blue and yellow. As predators, they don't need to see the difference between some similar shades.
  • Their vision would also be blurrier as they aren't built to process clear images.

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How cats and dogs see the world

popsci.com

This skill helps them catch their prey. Most cats and dogs will have difficulty finding still objects close to them, but they can spot subtle movement for up to a half-mile.

While humans field of view is about 180 degrees, our furry friends' field of vision is past 200 degrees. However, the field of view differs depending on the breed.

Animals can see better in dim light because their eyes have more rods than ours, meaning they need less illumination to form a usable picture.

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The other senses of cats and dogs compensate for their visual limitations.

  • Cats can hear the ultrasonic sound that their prey makes, allowing them to find their target even their prey gets out of sight.
  • Cats also use smell to identify people. If you've been gone for some time, your cat may not recognise you immediately when you return.
  • Dogs also have a good sense of smell. A dog's sense of smell ranges from 1,000 and 10,000 times more effective than people.

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