Can animals see TV?
Have you ever caught your curious canine tilting his head at the television screen, intently watching animal shows? Or noticed your crafty kitty pawing at birds on an iPad? You‘re not imagining it – pets definitely can see and perceive images on screens similarly to humans. Their vision works a bit differently than ours, though. Understanding your furry friends‘ eyesight helps explain why some are glued to the TV while others ignore it completely.
Pets Have More Rods For Sensing Motion
Human vision relies primarily on cones concentrated in the retina, the light-sensitive tissue lining the back of the eye. Cones allow us to see details and color. Dogs and cats also have cones, but their retinas contain far more rods – long, thin photoreceptors that detect dim light and motion.
For example, the human eye contains around 6-7 million cones but only 90-125 million rods. Compare that to cats, which have from 16-20 million cones but a whopping 192-255 million rods! [1] Dogs also boast way more rods than people.
This rod-dominant structure equips cats and dogs with excellent night vision. But they don‘t see colors as vividly with fewer cones. Cats and dogs possess only two cone types – sensitive to blue and green wavelengths of light – unlike humans‘ three cones detecting red, green and blue hues.[2]
Flickering Screens Grab Their Attention
Our pets‘ bounty of rods also makes them ultra-sensitive to detecting movement. Catching even small motions is critical for predators like cats hunting prey. Dogs evolved as hunters too. Their eyes notice flickering light and images far easier than we do.
This is a key reason dogs engage with television. Old cathode ray tube TVs flickered visibly at 50-60 hertz frequency. New high definition flatscreens emit less noticeable flicker up to 240 Hz, but dogs may still see TV images as broken up frames rather than continuous motion.
In fact, studies using EEGs show dogs perceive complete motion at 75 Hz, while humans integrate images smoothly above 55 Hz due to differences in refresh rates between photoreceptor signals and optic nerve transmission.[3] So television likely appears somewhat fragmented to dogs. But the flickering attracts their visual attention.
Sounds and Colors Entice Dogs to Watch
Research reveals dogs recognize pictured animals on TV and relate images to real objects through associated sounds. When hearing dog vocalizations paired with a visual dog, dogs paid more attention compared to silent footage or mismatched sounds.[4]
Also, remember dogs see yellows, blues, and greens more vividly on screen thanks to their two cone types. Scenes with blue skies, yellow tennis balls, and grass easily catch their eye. Contrast and brightness in images also aid visibility for canines.[5]
This combination of colors, sounds, and flickering motion allows dogs to comprehend and enjoy television on a basic sensory level. Scenes with wildlife grab their instincts to detect prey. A dog bark guarantees to pique interest too!
Cats Also Visually Track Motion on Screens
Felines share many canine visual strengths – excellent motion detection from plentiful rods, wide peripheral fields of vision, and ability to identify pictured animals. So cats can follow TV visually too.
Whether captivated or ignoring the screen, cats‘ reactions depend a lot on personality and prey drive. Bold, active breeds like Bengals and Savannahs often fixate on TVs. Shy Persians and Ragdolls may seldom glance up.
Cat TV programs use animated mice, chirping bird sounds, and fluttering toys to tap into cats‘ instincts. Images of tasty treats also draw their focus. And crinkling plastic sparks that irresistible bag-pouncing reaction![6]
Safe TV Viewing Habits for Pets
According to veterinary ophthalmologists, normally distanced TV watching doesn‘t harm dogs‘ or cats‘ eyesight. Avoid extremely close proximity with large screens. It‘s also recommended not to leave TVs on constantly for pets home alone.
Occasional, moderate viewing can provide company for anxious dogs when you‘re away, however. Just don‘t expect TV to substitute for daily human interaction, walks, playtime and affection!
So feel free to let your furry companions enjoy some Animal Planet or cat-friendly shows now and then. Just know they may not follow intricate plot lines. The sensory experience – sounds, colors, motion – matters more when it comes to pets loving TV!