Visible worms in the stool, around the anus, or in vomit
Pot-bellied or swollen abdomen
Diarrhea, especially recurring or with mucus
Vomiting
Weight loss or poor weight gain
Increased appetite with no weight gain
Dull, rough, or poor-quality coat
Lethargy or low energy
Scooting or dragging the rear on the floor
Itching, licking, or irritation around the anus
Pale gums
Coughing or breathing changes
Small white segments near the anus or in bedding
Worms or worm segments in the litter box
Signs of dehydration
Poor growth or delayed development