Angiostrongylus cantonensis is a nematode parasite that causes eosinophilic meningitis in humans. It has a complex life cycle involving rats as the definitive host and various snail and slug species as intermediate hosts. In rats, the worms mature and reproduce in the pulmonary arteries, while in accidental hosts like humans they cannot complete their life cycle and cause meningitis symptoms instead. The document discusses the taxonomy, morphology, identification, and life cycle of A. cantonensis in detail. It also highlights several key publications that have contributed to the understanding of this parasite.