Canine Vision In Comparison To Human Vision

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How does your dog find his favorite toy every time you throw it? Does he see the bright colors or does he smell it out? Is it true dogs can see colors or are they really color blind? Everyone wonders how these furry, four-legged creatures see and if they see the same way we do, so why not take a deeper look into how a canine’s vision really works. There are various aspects involved with ones vision and being able to fully understand how a dog really sees is impossible since we are human, but with much research we are able to break down information such as perception of light and motion, visual field of view, depth perception, visual acuity, and the perception of color and form. To understand the visual system of canines, electro physical studies have been performed. An article published in the Canadian Journal of Veterinary Research explains monocular and binocular stimulation in anesthetized dogs. Blood oxygenation level dependant (BOLD) and magnetic response imaging (fMRI) tests show us neural activity in the brain. These tests help prove that brain activity in dogs was present and that neural activity in the LGN of the thalamus and in the occipital cortex play an important role in canines as they do for humans (Willis, Quinn, McDonell, Gati, Partlow, & Vilis, 2001). With better technology, we are able to conduct experiments and develop significant results into scientific evidence how the canine visual system works. It is important to understand the canines system before we can determine any differences or similarities. Next, it’s important to understand that every breed of dog is unique so they all see things a bit differently. For example, some dogs are sighthounds, while others are not. Greyhounds are a distinctive breed of sighthounds, and Retrievers are visual tracking dogs (Coile, 2008). Now we must point out some differences in how the visual systems

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