Hi. I have a Chow-Chow mix, 10 years old, who since late Wednesday night has been having problems walking . His back legs don't appear to be strong enough right now... he can stand but only for a few moments. He still has an appetite and still drinks water. He has only gone partially to the bathroom the last few days (today he pooped, but while lying down). He has been taking pills since late last week for his kidney's. He went for a walk on Tuesday in the park. Today we started giving himTramadol which we were told will help relieve his inflamation and pain. What should I do? Should I seek further help for him? Thank you.