The common name for Aelurostrongylus abstrusus is cat lung worm. This worm was originally found and described by Mueller as Strongyluspusillus. In 1898, Railliet changed the name to Strongylusabstrusus. Braun and Luehe described a species from the cat that they named Strongylusnanus. In 1907, Railliet and Henry erected the genus Sythetocaulus to include this worm.
Cameron erected the genus Aelurostrongylus and concluded that the larva passed in the feces was capable of infecting mice; this work has never been duplicated. This is a metastrongyloid nematode parasite of the cat around the world. The adults live in the terminal respiratory bronchioles and alveolar ducts.