Old Dog Stops Eating. Sometimes, a dog may ingest a foreign object such as a sock that is blocking their digestive tract. One of those reasons is if your dog stops eating altogether, especially if it is a sign that your pup is not feeling well.
When should my dog see the vet if he’s not eating? Some old dogs stop eating anytime they are experiencing stress. Here’s everything you need to know about an old dog not eating, from why it happens to what you should do about it.