Whipworms are an intestinal parasite that is also seen in dogs and cats. The pet must ingest infected matter, such as food, picking things off the ground, or self-grooming. Adult whipworms are actually quite small, reaching 2-3 inches. Whipworms attach to the walls of the large intestines and feed on blood. Mild whipworm infections may go unnoticed while heavier infections can cause chronic health problems. Signs to watch for include weight loss, diarrhea, mucous or blood in the stools, and anemia. Diagnosis is confirmed by looking at a fecal sample under the microscope and identifying whipworm eggs. Typically, this is performed at each monthly puppy/kitten exam and annually with wellness exams on adults. If your pet is diagnosed with whipworms, talk to one of our veterinarians about a treatment that is right for your pet since whipworms may require multiple treatments to kill.