How do amphibians breathe when they are young?

Amphibians usually spend their juvenile stages as tadpoles or a similar aquatic lifestyle, and may use slightly different respiratory organs than in their adult stages. Here's how amphibians breathe in their young stages:

1. Tadpoles: Tadpoles are the larvae of amphibians such as frogs. They breathe through gills in water. The gills of tadpoles are similar to those of fish and can absorb oxygen from the water and expel carbon dioxide from the body.

2. Caecilian larvae: Caecilians include animals such as salamanders, frogs, mice, and salamanders, and their larvae also need to live in water. Unlike tadpoles, caecilian larvae breathe through their skin in water. There are a large number of small blood vessels on the surface of the skin that can absorb oxygen and nutrients in the water.

3. Hagfish larvae: Hagfish larvae live in rivers and lakes. Their larvae breathe through gills in the water, which are located on the sides of the body.

4. Xenopus larvae: Xenopus laevis include tree toads, horned toads, etc. Their larvae breathe through their skin in water and on land.

It is important to note that the juvenile stages of amphibians usually live in the water, while the adult stages may move from the water to land. Therefore, different types of amphibians use different breathing methods at different stages.

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