What happens to your dog after eating foam will depend on how much was eaten and your pup’s size. As ear plugs are small, it’s likely that they will simply pass through a dog's digestive system until your dog poops them out. If your dog pooped the ear plug out, there's no need to do anything further, however if your pet hasn't had any bowel movements in 48 hours or is straining, contact your vet to request a consultation. However, if your dog shows any of the following symptoms after eating a foam earplug, you should call your veterinarian immediately. • Vomiting • Excessive or bloody diarrhea • Constipation • Excessive drooling • Abdominal pain or bloating • Lack of appetite • Lethargy • Excessive panting An internal obstruction in dogs is where an object gets stuck and causes an intestinal blockage in the stomach or intestines that stops liquids or solids from passing through the gastrointestinal tract. In severe cases, an internal obstruction can decrease blood flow and cause deterioration to parts of the bowel. Your vet may suggest scans such as an X-ray, radiograph, ultrasound or endoscopy to find out exactly where the earplugs are in your dog’s body. Surgery will only be performed to remove small items such as earplugs in very rare cases.