What are the signs and symptoms of a hookworm infection in animals?
A hookworm produces an anticoagulant in its saliva so the host’s blood does not clot at the site the hookworm attaches. If the worm moves from that site to reattach itself at another, the first site may continue to bleed, sometimes seriously. Hookworms, especially A. caninum can cause severe disease. By feeding on the oxygen-carrying blood of the host, hookworms can rapidly cause anemia. The mucous membranes e.g., gums, will appear pale, the animal will become weak, and sometimes black, tarry stools can be seen. There may be vomiting and diarrhea. Growth in young animals is stunted, and the hair coat may appear dull and dry. In severe infestations, animals may cough or develop pneumonia as the larvae migrate through the lungs. Animals may become emaciated and eventually die from the infection.
