Visible worms or worm segments in the stool, around the anus, or in vomit
Scooting or dragging the rear end on the floor
Pot-bellied appearance, especially in kittens
Weight loss despite a normal or increased appetite
Diarrhea or soft stool
Vomiting
Poor coat condition or dull fur
Increased appetite with no weight gain
Lethargy or low energy
Coughing or breathing problems in some cases
Pale gums or signs of anemia
Itching or irritation around the rear end
Finding fleas, which can be linked to tapeworms
A vet fecal test confirming parasite eggs or larvae