Visible worms in stool, vomit, or around the anus
Scooting or dragging the rear on the ground
Pot-bellied appearance
Weight loss despite normal or increased appetite
Diarrhea or soft stools
Vomiting
Dull coat or poor coat condition
Lethargy or low energy
Coughing, especially with lungworm or roundworm infections
Itchy anus or frequent licking of the rear
Pale gums, which can suggest anemia from heavy worm burden
Worm segments that look like rice grains in the stool or bedding
Poor growth in puppies
Abdominal discomfort or bloating
A sudden change in appetite
Signs of dehydration from ongoing diarrhea or vomiting