When monitor lizards breathe, air flows into their lungs in a one-way loop -- a pattern known as one-way airflow.
via Discovery News http://news.discovery.com/animals/dinosaurs/monitor-lizards-breathing-may-have-evolved-before-dinos-131211.htm#mkcpgn=rssnws1
via Discovery News http://news.discovery.com/animals/dinosaurs/monitor-lizards-breathing-may-have-evolved-before-dinos-131211.htm#mkcpgn=rssnws1
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