Q. My 11.5 yr old cavalier has lost his passion for eating. His blood work and teeth have been checked by his vet already but he's great worst? Any ideas
A. Have you tried switching his food brand? After a long while eating the same brand, your pup could be craving something different. You should also be trying to use his meals for training. During breakfast, use a few pieces of kibble for every behavior. Ask for a sit, and feed him a few pieces. Ask for a down, and feed him a few more. Do some basic obedience. This typically builds their drive to eat! My dog never eats out of a bowl, we're always using mealtime as training time.
Do not force your dog to eat more than he is comfortable with. If he isn't losing weight, I wouldn't worry too much about it. Make sure you are often weighing him to see if his weight is fluctuating.