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Vertebrates, Fishes, Amphibians, Reptiles and Birds
Gill
Gill definition: The breathing organ of aquatic animals.
Related Terms
Air Sac
Amniotic Egg
Carapace
Cartilage
Ectotherm
Endoskeleton
Endotherm
Feather
Jacobsons Organ
Lateral Line System
Operculum
Oviparous
Ovoviviparous
Plastron
Sternum
Swim Bladder
Tetrapod
Tympanic Membrane
Vertebrate
Viviparous
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