Animal Care Needed

I have a 6-year-old, 165 pound Landseer (Newfoundland). His name is Cooper. He is big and fits the phrase Goofy Newfy very well. He likes to go for short walks ( about a mile at a time). He is not allowed and doesnt get on the furniture. He is a pretty good boy all in all. He eats once a day, around 6:00 p.m.