Click on the text below to jump down to the desired section of this page. The male measures 7.5 mm and the female 9.9 mm.
Males have a short bursa and the vulva of the female opens near the posterior end.
Histological section of Aelurostrongylus in lung tissue, cross section of one parasite is shown highlited. Adult female worms lay their eggs in the alveoli of the cat's lung. The L1 can live for about 2 weeks in the environment. If a paratenic host eats the snail, the L3 migrate into the tissues of the new host and arrest. Cats are more likely to be infected by eating the paratenic hosts as snails and slugs are usually not part of their diet.