The infective stage of ''T. leonina'' is L2, which are found in the egg. The eggs are ingested by the host, hatch, and enter the alimentary tract. The larvae then penetrate the wal of the intestine. The larvae continue to develop and mature into adults. The adults live in the lumen of the intestine. In the host: | The infective stage of ''T. leonina'' is L2, which are found in the egg. The eggs are ingested by the host, hatch, and enter the alimentary tract. The larvae then penetrate the wal of the intestine. The larvae continue to develop and mature into adults. The adults live in the lumen of the intestine. In the host: |