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.
The Morkie or Maltese/Yorkshire Terrier cross is a very human dependent breed of dog. They do not like being alone and can become destructive, depressed, bark and get anxiety if left alone for too long. Puppies should never be left alone in a crate longer then 2 - 3 hours at a time.