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.
When a normally well-behaved dog starts having âaccidentsâ in the house, something is up. You might feel that your dog is punishing you for something or is just being difficult, but well-behaved dogs donât suddenly urinate in the house without a reason.Itâs your job to play pet detective to discover what is causing the behavior change.hen a normally well-behaved dog starts having âaccidentsâ in the house, something is up. You might feel that your dog is punishing you for something or is just being difficult, but well-behaved dogs donât suddenly urinate in the house without a reason.