do axolotls have gills

Yes, axolotls do have gills. As larval amphibians, these external gills are essential to their survival. Here's a more detailed look at how they function:

1. Gill Development: Axolotls hatch with external gills that are used to extract oxygen from the water. These gills are quite prominent in the larval stage.

2. Metamorphosis: During metamorphosis, which usually occurs within 12-18 months, axolotls transition from their aquatic larval stage to an adult form. This process involves the absorption of the external gills and the development of internal gills (branchiostegal membranes) that lie behind the jaws.

3. Adult Respiration: In adulthood, the axolotl primarily breathes through its lungs, although its gills remain functional. The gills continue to play a role in respiration, especially in water with low oxygen levels.

4. Regenerative Abilities: Axolotls are known for their remarkable regenerative abilities, which include the regeneration of lost gills, limbs, spinal cord, heart, and other parts of their body.

5. Amphibians' Gills: The presence of gills in axolotls is common among many amphibian species, which typically have both aquatic and terrestrial life stages.

The gills are just one of the many fascinating biological features of axolotls, making them a valuable subject of study in areas such as comparative anatomy, physiology, and developmental biology.