15 is old for a dog.
Most small dogs live on average of 15 to 20 years although some small dogs may die sooner.
Larger dogs are lucky to live to 12 to 13 years and some dogs such as the Great Dane live up to 8 years.
13 year old dogs may whine due to being in pain, hearing loss, anxiety and cognitive problems.
At 13 a dog is considered old and older dogs do normally whine which is normal.
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.