Do not confuse this word with cancer or chancre. (1) In cats and dogs, acute inflammation of the external ear and auditory canal.aphtha (2) In the horse, a process similar to but more advanced than thrush. The horny frog is generally underrun with a whitish, cheeselike exudate, and the entire sole and even the wall of the hoof may be undermined. [L. cancer, crab, malignant growth]
