Glowing dog eyes

If you mean they appear to glow in certain lighting conditions and in pictures when flash is used then this is a consequence of the eye structure of dogs. The eyes of dogs (as well as cats and many other animals) possess a light-reflective surface called the tapetum lucidum, which enhances vision in low-light conditions. When you see your dogs eyes glow, what you're seeing is light being reflected back from the back of the eye.

Hi I am sry I can't understand what u told me as I only know English sry

Oh he's a two and a half yr old male neutered doxipoo