Axolotl

Axolotls that undergo metamorphosis change their physiology.

An excerpt from the article 21 facts about Axolotl
Metamorphosis allows axolotls to adapt to terrestrial conditions. They develop eyelids, muscle tone increases, gills disappear, and skin becomes more impermeable to water. Lungs, present in larval form, develop into vestigial form. Axolotls that undergo metamorphosis resemble salamanders of the Ambystoma velasci species, although growing longer fingers.