lungs
Mammal is to lungs as fish is to gills.
A sea otter is a mammal, so it has lungs.
Yes. A whale is a mammal. Mammals have lungs.
A blue whale is a mammal and needs to come to the surface and breath air. They do not have gills.
No, sloths do not have gills. They are mammals and breathe air through their lungs like other mammals.
Lungs a similar in that they help to bring oxygen into the living things body. The difference is that gills are external and lungs are internal.
A whale is a mammal and needs to come to the surface and breath air using two lungs.
Amphibians, such as frogs and salamanders, begin life with gills for underwater breathing and later develop lungs to breathe on land as they mature. This transition from gills to lungs is part of their metamorphosis process.
Dolphins are mammals, not fish. And mammals breathe with lungs, not gills.
A lot. Dogs, Cats. Almost all animals have lungs.
Fish Use Gills Instead of lungs. Gills Help fish to Breath. Fish Use Gills Instead of lungs. Gills Help fish to Breath.
the gills of a fish take in oxygen in water while the human lung take in oxygen in the air. I think...