Having a round pot belly, vomiting and diarrhea are all common symptoms of roundworms in dogs, states WebMD. Significant weight loss or finding roundworms in a dog's feces may also point to roundworms, although it's impossible be sure without laboratory testing.
Roundworms are extremely common in both domestic and wild dogs. They live within the dog's gut and can make the animal quite sick if left unchecked. Mild to moderate infestations are easy to treat with prescription anti-parasite medications, such as moxidectin, pyrantel and piperazine. More severe infestations may necessitate long-term or injectable treatment methods, as well as supportive therapy to reduce the dog's symptoms.
One of the biggest dangers of roundworm infestations lies in the fact that the parasite prevents the body from absorbing nutrition. Symptoms such as vomiting and diarrhea add to this danger, stripping the dog of both hydration and vital minerals and nutrients it needs for survival.
Roundworms are zoonotic. Human infection is rare, but not unheard of, and may result in neurological problems if left untreated. For this reason, all dogs should be treated for roundworms both in puppyhood and at regular intervals throughout adulthood. When dealing with a dog that may have roundworms, it's important to see a veterinarian for verification and treatment.