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Canine cognitive dysfunction (CCD) is a disease prevalent in dogs that exhibit symptoms of dementia or Alzheimer's disease shown in humans. [1] CCD creates pathological changes in the brain that slow the mental functioning of dogs resulting in loss of memory, motor function, and learned behaviors from training early in life.
Dogs do not have red-sensing cones, so their sight is similar to that of someone with red-green color blindness, according to research by Jay Neitz, a professor of ophthalmology and a color vision ...
Dogs have demonstrated episodic-like memory by recalling past events that included the complex actions of humans. [41] In a 2019 study, a correlation has been shown between the size of the dog and the functions of memory and self-control, with larger dogs performing significantly better than smaller dogs in these functions.
Despite similar symptoms and blood test results to Cushing's disease, evaluation of dogs with SARDS did not reveal any tumors in the pituitary or adrenal glands, [9] and recent work has indicated significant differences in the clinical and laboratory test parameters between the two diseases. [10]
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For example, several studies have shown that performance is better on, for example, a color discrimination (e.g. blue vs green) after the animal has learned another color discrimination (e.g. red vs orange) than it is after training on a different dimension such as an X shape versus an O shape. The reverse effect happens after training on forms.
New research led by Kyoto University has found that "cats may be as intelligent as dogs, as opposed to the common view of people that dogs are much smarter."
For example, most human observers know that an apple typically has a reddish hue; this knowledge about the canonical color which is represented in memory constitutes a memory color. [ 1 ] [ 2 ] As an example of the effect, normal human trichromats , when presented with a gray banana, often perceive the gray banana as being yellow - the banana's ...