My dog Chase is 11 years old. He is a mixed breed of an average weight of 45-50 pounds. He is really shedding a lot right now. He also is losing weight we offer him dry dog food in the morning and by evening there is still a little left. We give him approx 2 cups a day. He use to gobble it all right down. He seems playful and energetic. I am very concerned about the excessive shedding (especially this time of year) and the weigth loss.
So am I. Your pet should be seen by a vet for this. At this age many things can be going wrong and you do not want to wait. Vetcare