Snakes and limbless lizards typically possess only the right lung as a major respiratory organ; the left lung is greatly reduced, or even absent. Amphisbaenians, however, have the opposite arrangement, with a major left lung, and a reduced or absent right lung [WP]

lung

UBERON:0002048

Respiration organ that develops as an outpocketing of the esophagus.

AAO:0000275

AAO:0010567

BTO:0000763

CALOHA:TS-0568

EFO:0000934

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uberon

UBERON:0002048

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