Posted on Tuesday, March 26th, 2013
We’re all aware that dogs have a pretty superior sense of smell. As the experts on NOVA pointed out not long ago, dogs don’t have noses twice or three times as good as ours – this kind of olfactory power requires exponents. In fact, scientists described an analogy to give us an idea of how well dogs can smell: If smelling were seeing, the difference between man and dog would be seeing a third of a mile away clearly and seeing more than 3,000 miles away clearly. But that analogy is just for the sake of explaining how good a dog’s nose actually is.
When it comes to dog eyesight, what more do we know? Well, you’ve probably heard that dogs are colorblind and drawn from this the conclusion that dogs just don’t have great eyesight. While there’s some truth to that, it’s definitely not the whole story
Focus. When we talk about 20/20 vision, it usually refers to focus. When the second number starts to escalate, you have a more significant case of nearsightedness. Anyone who wears glasses for distance can tell you the pain of focusing on anything too far away without the aid of their specs. Dog vision is essentially both nearsighted and farsighted. While they can’t usually focus clearly on objects closer than 10 inches, distance is also difficult. As a result, they depend largely on motions – but can spot these from a great distance.
Color. One of the most persistent myths about dogs is their supposed colorblindness. But this confusion lies more in the term “colorblind” than in how dogs actually see. As with humans, colorblind dogs don’t perceive a world awash in grays. Rather, they have fewer color-sensing cones in their retinas, notes PerfectPuppyCare.com. As a result, they’re able to pick up on fewer hues in the spectrum.
So, what does the palette of a dog’s vision look like? Your pet is able to see black, white and shades of gray, but with shadings of yellow, blue and violet. That stylish red bandana, those bright orange treats or that green grass is completely lost on your color-challenged pal. Rather, these hues all appear as one of or a blend of the spectrum dogs can take in.
This content post is provided by the pet experts at Hartz.