No Such Thing
There is no parasite called a "wolf worm" in cats. This is likely a misunderstanding.
Common Parasites
Roundworms: Vomiting, diarrhea, weight loss, pot-belly.
Tapeworms: Weight loss, constipation, dull coat.
Hookworms: Blood loss, anemia, diarrhea.
Signs of Intestinal Parasites
Diarrhea or constipation, vomiting, weight loss, dull coat, pot-belly, excessive grooming, scooting, blood in stool, or visible worms.
Consult a veterinarian for a fecal exam and proper treatment.