That has been strongly discouraged for many, many years by the veterinary profession on the grounds it is EXTREMELY unhealthy and possibly even toxic for dogs if they eat the wrong thing. Working as a vet tech, I've seen the results of people feeding pets table scraps, and it's easily described in a few words: needlessly obese and unhealthy pet.
The strip is, at best, incredibly boring and not overly amusing since the reruns started. Please, totally retire and make space for an artist with something fresh and interesting to say. You've had a good run, now hang it up. It's truly sad you didn't learn from the example of Larson and Watterson and retire when the strip was good. By refusing to let go, what more and more fans remember of FBOFW is how good it USED to be and how the quality has dropped. Unlike Watterson and Larson, fans don't want more because we've seen what you have to serve up and it's not at all appetizing.