Regular grooming
As your senior dog ages, so do their fur and skin. Over time, a luxurious and shiny coat could slowly become dull-looking and brittle.
Senior dogs can also suffer from dry, flaky, and irritated skin, which might aggravate if not cared for properly.
This automatically implies that you will have to brush your dog on a regular basis and give them timely haircuts to avoid the development of mats and tangles. You might want to look into mild shampoos that will nourish and heal the skin and coat.