Roundworms are not just gross but can become a serious health threat. Not only they rob your dog of nutrients, but complications include intestinal blockage or pneumonia. Beside finding worms either in the poop or vomit, other signs can include diarrhea, changes in appetite, lethargy, swollen belly, weight loss, and even coughing.

• Dogs with whipworms may vomit a yellow-green substance while dogs with roundworms, hookworms or tapeworms may vomit visible worms. In most cases, you’ll be able to see the worms in your dog’s vomit. Keep in mind, however, that vomiting can be triggered by other health issues such as indigestion. Answered by Lucius Crist on Mon, Jan 25, 2021 5:28 PM

• Worm infestation may not always be manifested, and the dog vomiting worms may be the first signal. However, worms cause weight loss in almost all cases, so if you notice weight loss you should carefully monitor your pet for other more subtle symptoms. Other signs of worm infestation may include vomiting, coughing, pot bellied appearance,

• Many cases of worms in dogs can be very serious and sometimes even fatal. 2. Vomiting If your dog is vomiting, it may be a symptom of worms. Each type of worm is known to cause vomiting. Dogs with whipworms may vomit a yellow-green substance while dogs with roundworms, hookworms or tapeworms may vomit visible worms.