Weight changes

As a dog ages, his metabolism will deteriorate, and the dog will start to gain weight. At this time, the owner can relatively reduce the dog's food intake and take the dog out for more walks to increase the body's metabolism.

Hair Changes

As your dog ages, his hair will not look as good as when he was young, both in color and flexibility. Dogs' hair will become thinner and their coat color will begin to fade, just like humans' hair will slowly turn gray as they age.

Respiratory changes

As dogs age, their respiratory ducts will also become narrower, and sometimes they may become short of breath or even cough.

Digestive changes

As dogs age, their digestive function will deteriorate and they will easily have diarrhea or vomiting. This will cause the dog to not absorb sufficient nutrients, so it is best for the owner to supplement the dog's nutrition regularly.