The colors that dogs see is blue and yellow and likely some other colors as well.
Dogs have yellow-blue dichromatic vision which means that dogs are most similar to a red-green color blind person.
They are very good at distinguishing between variations of blues and yellows, but cannot really see red and green all that well.
Dogs do cry but not in the same way as humans cry.
Dog-crying really is more like whimpering and unlike humans, dogs don't tear up when they are sad.
“Signs that your dog is sad include vocalizations, like whimpering or whining, as well as showing a lack of energy or interest in things they normally love, like favorite snacks or toys.
A dog can fall over due to tripping, being dizzy, suffering medical issues or other issues such as injury, stroke, poisoning, or an infection.
Typically, dogs can fall over because of mild to moderate disorders, such as injuries or inner ear infections, or they can fall over because of more serious conditions, such as stroke or poisoning.
Either way, if your dog is falling over you should contact your veterinarian as soon as possible.
Older dogs may also whine due to being in pain, hearing loss, anxiety and cognitive problems.
Separation anxiety can affect dogs of any age but often becomes worse as they age.
They may also whine when something scares them like a loud noise or changes in the environment.
Elderly dogs that are stressed or anxious may also tremble or pant.
Anxiety is a frequent reason why a dog may be whining at night.
A 13- to 15-year-old dog, depending on the dogs size and health, is roughly equivalent to a 70- to 115-year-old person.
In the dogs elder years, it is harder for your dog to learn new things.
In fact, the older dog likely will be resistant to changes in their surroundings and routine.
Keep your daily routines as consistent as possible.
Maintain low energy levels to reduce any excitement within your home.
Play soothing music throughout the day, and consider more ways to create a zen space for your dog.
Try to keep your senior dog away from situations that will increase his anxiety or stress.