Newt
During the subsequent few months, the larvae undergo metamorphosis, during which they develop legs, and the gills are absorbed and replaced by air-breathing lungs. Some species, such as the North American newts, also become more brightly coloured during this phase. Once fully metamorphosised, they leave the water and live a terrestrial life, when they are known as "efts". Only when the eft reaches adulthood will the North American species return to live in water, rarely venturing back onto the land. Conversely, most European species live their adult lives on land and only visit water to breed.
Ned's Newt
That night, Newton crawls from his bowl and gulps down several mouthfuls of Zippo. Thus, the "too much" warning comes true: Newton grows 6 feet tall, can talk (voiced by Harland Williams), and has the power to shapeshift. After Ned realizes this, he and Newton become the best of friends, but unfortunately, the effects of Zippo do not last forever. In fact, Newton often gets Ned into trouble, at which point the Zippo wears off and Newton shifts back to his smaller form, leaving Ned alone to bear the wrath of his elders.