Lungs. Only fish and some amphibions have gills.
Yes. They have lungs because they don't live in the water, they just tend to go into the water to moisturize or to grab a bite to eat
They do indeed. I should also point out that crocs are reptiles, not amphibians.
No, when alligators go under water, they are holding their breath.
No, not all reptiles have lungs. Some reptiles, like snakes, have evolved specialized structures like air sacs that help in breathing. Crocodilians are an example of reptiles that use both lungs and special air sacs.
The main differences between fish and reptiles are:fish breathe through gills and reptiles breathe through lungsFish have scales and reptiles have scaly skinFish must live in water but reptiles are terrestrial (except for turtles)
The alligator gar can "sort of" breathe air. It is a fish, complete with gills, but is a primitive one. It's gills don't work very well out of water, but it can survive for several hours in air. A link can be found below.
If you have lungs of gills please contact your doctor for everyones sake.
Boas are reptiles- they have lungs.
gills and lungs
Mammals have lungs, as do amphibians, reptiles, and birds. Fish are the only chordates that have gills rather than lungs.
Reptiles always breathe with lungs. Amphibians may breathe with lungs, gills or through their skin.
No. They are air breathing reptiles who have to surface to breathe.
Most reptiles exchange gases through their lungs. The lungs of reptiles are folded so as to make enough room for gaseous exchange.
Only underwater snakes do. Not land snakes.
When amphibians are babies, they have gills, but most adult amphibians breathe with a pair of lungs excluding salamanders.
No, not all animals have lungs, fish and reptiles have gills, humans and mammals have lungs except whales and dolphin they have gills because they under water
They do indeed. I should also point out that crocs are reptiles, not amphibians.
During the metamorphosis from tadpole to frog, a frog grows lungs and loses its gills.