Best Answer: The pupil size limits the the amount of light that enters the eye. There are also day-time photoreceptors, the cones, which occur with three kinds of photo-sensitive pigments, for red, yellow-green, and blue.
Those âdevotedâ dogs lying on their mastersâ graves? Theyâre depressed. âMany dogs are simply depressed for their whole lives because theyâre deprived of the normal amount of attention, exercise, and stimulation they need from day one. These humans wonât know they have a problem and wonât want the dog any livelier as that wouldnât fit in with their lifestyle,â says Tamara.
Pressure on a nerve by bone or by soft tissue such as tendons, muscle or cartilage is the cause of a pinched nerve. The pressure on a nerve interrupts the nerve's normal function and your dog is likely to experience symptoms of pain, weakness in the limbs, numbness or tingling. Injury through over-energetic exercise is one cause of the condition, but it can also be hereditary.